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Amorphous indium-gallium-zinc-oxide thin film transistors passivated by annealing oxidized MoOx:Ta layers 氧化MoOx:Ta层退火钝化非晶铟镓锌氧化物薄膜晶体管
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-11 DOI: 10.1016/j.mssp.2025.110339
Yongliang Chen , Liangdong Li , Zecui Gao , Hennrik Schmidt , Thomas Huber , Enrico Franzke , Chengyuan Dong
To enhance the bias stress and light illumination stability of amorphous indium–gallium–zinc-oxide thin-film transistors (a-IGZO TFTs), the tantalum-doped molybdenum oxide (MOT) films were proposed as their passivation layers. Two oxidation methods for MOT films, i.e., sputtering oxidation (SO) and annealing oxidation (AO) were comparatively investigated. Optimal processing conditions for both methods were determined by comprehensively evaluating their oxidation states, as well as the electrical performance and bias-stress stability of the corresponding devices. Compared with the unpassivated a-IGZO TFTs, both the SO-devices and AO-devices showed better positive bias stability (PBS) and negative light bias stability (NBIS). Especially, the AO-devices exhibited the best PBS (Vstress = 40 V, ΔVTH = 0.19 V) and NBIS (Vstress = −20 V, |ΔVTH| = 0.19 V) properties. Two reasons were assumed to be responsible for the more stable properties of AO-devices than those of SO-devices: (1) suppression of the oxygen plasma damage on the back channels during the deposition of MOT films, and (2) stronger ultraviolet (UV) light reflectivity at the back surfaces during NBIS tests.
为了提高非晶铟镓锌氧化物薄膜晶体管(a-IGZO TFTs)的偏置应力和光照稳定性,提出了掺钽氧化钼(MOT)薄膜作为其钝化层。比较研究了MOT薄膜的两种氧化方法,即溅射氧化(SO)和退火氧化(AO)。通过综合评估两种方法的氧化态,以及相应器件的电性能和偏应力稳定性,确定了两种方法的最佳加工条件。与未钝化的a-IGZO tft相比,so器件和ao器件均表现出更好的正偏置稳定性(PBS)和负偏置稳定性(NBIS)。其中,ao -器件表现出最佳的PBS (Vstress = 40 V, ΔVTH = 0.19 V)和NBIS (Vstress = - 20 V, |ΔVTH| = 0.19 V)性能。aoo器件比so器件性能更稳定的原因有两个:(1)在MOT薄膜沉积过程中,氧等离子体对背面通道的损伤得到抑制;(2)在NBIS测试过程中,背面表面的紫外线(UV)光反射率更强。
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引用次数: 0
Comment on Ghebouli et al.: “An ab initio study of the structural, elastic, electronic, optical properties and phonons of the double perovskite oxides Sr2AlXO6 (X = Ta, Nb, V)” [Materials Science in Semiconductor Processing 42 (2016) 405–412] 评论Ghebouli等人:“双钙钛矿氧化物Sr2AlXO6 (X = Ta, Nb, V)的结构、弹性、电子、光学性质和声子的从头算研究”[材料科学与半导体加工42 (2016)405-412]
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-11 DOI: 10.1016/j.mssp.2025.110332
D.S. Yadav
This work aims to comment and discuss on the work previously published by Ghebouli et al.: Materials Science in Semiconductor Processing 42 (2016) 405–412; http://dx.doi.org/10.1016/j.mssp.2015.09.026. Unfortunately, after reviewed their work deeply and examined also, we explored a certain numerical perturbations in the estimations of crystal densities (ρ) of cubic structured (Sr2AlTaO6 and Sr2AlNbO6 except Sr2AlVO6) double perovskite oxides, which affects directly all these parameters depend upon it as like longitudinal (Vl), transverse (Vt), and average acoustic wave velocities (Vm) and consequently the Debye temperature (ϴD) studied by Ghebouli et al. [1], which crystallized in the space group Fm-3m # 225. In order to enhance their work by rectifying the numerical perturbations in the aforementioned parameters, we reexamine all of the data using appropriate relations, which depends upon the structural parameters (lattice constant and crystal density) and the elastic stiffness constants (Cij) discussed by Ghebouli et al. [1]. Our estimations for θD and ultrasonic velocities for each direction of propagation in cubic single-crystal as one longitudinal (Vl) and two shear velocities (Vt1 and Vt2) of Sr2AlTaO6 and Sr2AlNbO6 except Sr2AlVO6 diverse on a very large scale, while the values of Vt1 [110] for all targeted candidates highly deviated through our improvements. Outcomes for Debye temperature (ϴD) of such materials Sr2AlTaO6, Sr2AlNbO6 and Sr2AlVO6 reported by Ghebouli et al. [1] deviated through on a very large scale as 32.37 %, 42.53 % and 26.58 %, respectively, with our existing improvements.
这项工作旨在评论和讨论之前由Ghebouli等人发表的工作:半导体加工材料科学42 (2016)405-412;http://dx.doi.org/10.1016/j.mssp.2015.09.026。不幸的是,在深入回顾和检查了他们的工作之后,我们在立方结构(Sr2AlTaO6和Sr2AlNbO6除外Sr2AlVO6)双钙钛矿氧化物的晶体密度(ρ)估计中探索了一定的数值扰动,它直接影响所有依赖于它的参数,如纵向(Vl),横向(Vt)和平均声波速度(Vm),从而影响由Ghebouli等人研究的Debye温度(ϴD)。在空间群Fm-3m # 225中结晶。为了通过纠正上述参数中的数值扰动来加强他们的工作,我们使用适当的关系重新检查所有数据,这取决于结构参数(晶格常数和晶体密度)和弹性刚度常数(Cij),由Ghebouli等人讨论。[1]。除了Sr2AlVO6外,我们对Sr2AlTaO6和Sr2AlNbO6的纵向速度(Vl)和剪切速度(Vt1和Vt2)在立方单晶中传播的每个方向的θD和超声速度的估计在很大程度上存在差异,而Vt1的值[110]通过我们的改进,所有目标候选材料的Vt1值都存在高度偏差。这类材料Sr2AlTaO6、Sr2AlNbO6和Sr2AlVO6的Debye温度(ϴD)结果(由Ghebouli et al.[1]报道)与我们现有的改进相比,偏差非常大,分别为32.37%、42.53%和26.58%。
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引用次数: 0
Investigation on optical and electronic characteristics of AGZO/Ag heterojunctions AGZO/Ag异质结的光学和电子特性研究
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-11 DOI: 10.1016/j.mssp.2025.110338
Tingyao Tian, Zhang Zhang, Juan Guo, Ping Yang
We investigate the impact of aluminum-gallium (Al-Ga) co-doping on both the electronic structure and optical properties of zinc oxide-based/silver (ZnO/Ag) heterojunction using density functional theory (DFT). The results indicate that Al doping contributes more electrons than Ga doping; However, these electrons are less effectively converted into free carriers within a heterojunction system. Ga doping significantly increases carrier density, accounting for its superior conductivity compared to Al doping. Al-Ga co-doped ZnO (AGZO) further enhances the number of free carriers that Al ions contribute. Work function and charge density difference calculations confirm the transfer of electrons via the AGZO layer, resulting in improved conductivity. Optical property analysis reveals that Al-Ga co-doping significantly reduces light absorption and reflection while improving transmittance in the visible light range. The findings demonstrate that AGZO/Ag heterojunction effectively optimizes the balance between electronic structure and optical properties, providing potential for advancing multi-layer transparent thin films.
利用密度泛函理论(DFT)研究了铝镓(Al-Ga)共掺杂对氧化锌基/银(ZnO/Ag)异质结电子结构和光学性质的影响。结果表明:Al掺杂比Ga掺杂贡献更多的电子;然而,这些电子在异质结系统中转化为自由载流子的效率较低。与Al掺杂相比,Ga掺杂显著增加了载流子密度,这是其导电性优于Al掺杂的原因。Al- ga共掺杂ZnO (AGZO)进一步增加了Al离子贡献的自由载流子数量。功函数和电荷密度差计算证实了电子通过AGZO层的转移,从而提高了电导率。光学性质分析表明,Al-Ga共掺杂显著降低了光的吸收和反射,提高了可见光范围内的透射率。研究结果表明,AGZO/Ag异质结有效地优化了电子结构和光学性能之间的平衡,为推进多层透明薄膜提供了潜力。
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引用次数: 0
Effect of Ru-loading on the sensing capabilities of Co3O4/rGO for LPG detection at low temperature ru负载对低温下Co3O4/rGO检测LPG传感能力的影响
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-11 DOI: 10.1016/j.mssp.2025.110331
Boitumelo C. Tladi-Baloyi, Zamaswazi P. Tshabalala, Robin E. Kroon, Hendrik C. Swart, David E. Motaung
Liquefied petroleum gas (LPG) production is imperative as part of the global energy mix, while its timely detection is also vital for the safety of mankind. Thus, herein, Ru-loaded Co3O4/rGO nanocomposites were evaluated for LPG sensing. Structural analyses confirmed the successful loading of Ru nanoparticles (NPs) onto Co3O4/rGO sheets, resulting in the formation of hierarchical nanostructures as observed in the morphology analysis. Among the fabricated sensors, the 1.5 wt% Ru sensor exhibited the highest sensitivity of 12.3 toward 1000 ppm LPG at 75 °C, with a rapid response time of 44 s and a recovery time of 218 s. When the sensors were tested toward LPG in the presence of other interfering gases (NO2, CH4, CO, C3H8, C3H6O, CH3OH, C2H5OH, and 90 % RH, the sensor demonstrated superior sensitivity, stability, and selectivity toward LPG at a low temperature of 75 °C. Moreover, the sensor demonstrated good humidity tolerance and operational stability, retaining 95 % of the initial response over 30 days. These enhancements are attributed to the catalytic role of Ru and its promotion of charge transfer at the Co3O4/rGO interface. The findings highlight the potential of Ru-decorated Co3O4/rGO as a promising material for low-temperature LPG detection. Keywords: Co3O4; rGO; Ru; Nanoparticles; LPG; Gas sensing.
作为全球能源结构的一部分,液化石油气(LPG)的生产是必不可少的,而及时检测液化石油气对人类的安全也至关重要。因此,本文对ru负载的Co3O4/rGO纳米复合材料进行了LPG传感评估。结构分析证实了Ru纳米颗粒(NPs)成功加载到Co3O4/rGO薄片上,从而形成了形貌分析中观察到的层次化纳米结构。在制备的传感器中,1.5 wt% Ru传感器在75°C时对1000 ppm LPG的灵敏度最高,为12.3,快速响应时间为44 s,恢复时间为218 s。当传感器在其他干扰气体(NO2、CH4、CO、C3H8、c3h60、CH3OH、C2H5OH和90% RH)存在下对LPG进行测试时,传感器在75℃的低温下对LPG表现出优异的灵敏度、稳定性和选择性。此外,该传感器表现出良好的湿度耐受性和运行稳定性,在30天内保持95%的初始响应。这些增强是由于Ru的催化作用及其促进了Co3O4/rGO界面上的电荷转移。这一发现突出了ru修饰的Co3O4/rGO作为低温LPG检测材料的潜力。关键词:Co3O4;rGO;俄文;纳米颗粒;液化石油气;气体传感。
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引用次数: 0
Influence of argon hydrogen plasma treatment on the wettability, void and high temperature reflow reliability of indium thermal interface material for FCBGA package 氩氢等离子体处理对FCBGA封装铟热界面材料润湿性、空隙性和高温回流可靠性的影响
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-10 DOI: 10.1016/j.mssp.2025.110314
Yiou Qiu , Zhen Liu , Linzheng Fu , Ping Wu , Liu Li , Danni Cao , Wenjuan Guo , Oufei Liu , Shangde Xu , Xia Feng , Minxuan Liu , Xiaodong Teng , Wenhui Zhu , Liancheng Wang
Indium thermal interface materials (TIMs) exhibit significant potential for flip-chip ball grid array (FCBGA) packaging due to their high thermal conductivity (82 W/(m·K)) and remarkable ductility. However, the ultra-thin gold layer often fails to adequately protect against nickel oxidation, which compromises the wettability of the indium TIM and results in the formation of a non-uniform interfacial intermetallic compound (IMC), thereby hindering broader adoption. This study introduces an Ar + H2 plasma surface treatment aimed at enhancing the wettability of indium TIM on backside metallization (BSM) chips and promoting uniform IMC formation. Experimental results indicate that, following treatment, the indium TIM achieves a spreading ratio of 112.7 % on BSM chips after nine high-temperature reflows, reflecting a 25.7 % improvement compared to untreated samples. Furthermore, a uniform (Ni, Au)28In72 layer develops at the interface, significantly improving wetting performance after multiple reflows. In the Lid/In/BSM chip sandwich structure, the void size percentage for Ar + H2 plasma-treated samples is only 1.1 % after nine reflows, which is 39 % lower than that of untreated samples. Thermal simulation results reveal that the Ar + H2 plasma-treated sample, exhibiting the lowest void ratio, attains optimal thermal performance. The developed process is compatible with existing packaging production lines, providing a feasible technical pathway for the industrial application of indium TIMs in FCBGA packaging.
铟热界面材料(TIMs)由于其高导热系数(82 W/(m·K))和显著的延展性,在倒装芯片球栅阵列(FCBGA)封装中表现出巨大的潜力。然而,超薄金层往往不能充分防止镍氧化,这损害了铟TIM的润湿性,导致形成不均匀的界面金属间化合物(IMC),从而阻碍了其更广泛的应用。本研究介绍了一种Ar + H2等离子体表面处理方法,旨在提高铟TIM在背面金属化(BSM)芯片上的润湿性,促进IMC的均匀形成。实验结果表明,经过9次高温回流处理后,铟TIM在BSM芯片上的展布率达到112.7%,比未处理样品提高了25.7%。此外,在界面处形成了均匀的(Ni, Au)28In72层,在多次回流后显著提高了润湿性能。在Lid/In/BSM芯片夹层结构中,经过9次再流处理后,Ar + H2等离子体处理后样品的孔隙尺寸百分比仅为1.1%,比未处理样品低39%。热模拟结果表明,Ar + H2等离子体处理后的样品具有最低的孔隙率,获得了最佳的热性能。该工艺与现有的封装生产线兼容,为铟TIMs在FCBGA封装中的工业化应用提供了可行的技术途径。
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引用次数: 0
A review of the thermo-mechanical analysis framework for microelectronics packaging: Mechanics, material property determination, and structural considerations 回顾微电子封装的热-力学分析框架:力学、材料特性确定和结构考虑
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-10 DOI: 10.1016/j.mssp.2025.110321
Jeong-Hyeon Park , Eunhye Lee , Im-Deok Kim , Hyunwoo Jung , Jihyun Kim , Jungwan Cho , Jong-hyoung Kim , Tae-Ik Lee , Seung-Kyun Kang , Eun-Ho Lee
Recent advances in microelectronics packaging, including chiplet architectures and heterogeneous integration, have introduced complex interconnections and the integration of dissimilar materials. These developments complicate the thermal and mechanical behavior of packaging, impacting semiconductor performance and reliability. To address these challenges, a systematic approach to analyzing the thermal-mechanical behavior of microelectronics packages is required. This paper reviews frameworks and methodologies for analyzing such behavior, focusing on the integration of three key tools: mechanics theory, material property determination, and structural pattern consideration. This paper specifically goes beyond individual reviews of the three tools—mechanics theory, material property determination, and structural patterns. Instead, it focuses on systematically analyzing the interconnections among these three tools. To clearly define localized mechanics theory, appropriate material property determination is essential. Furthermore, integrating the constitutive equations for structural analysis becomes increasingly challenging as structural patterns grow more complex. Therefore, a thorough understanding and analysis of the relationships and complementarities among these three tools is crucial. The paper begins by discussing the thermal-mechanical balance laws and dissipation applied within mechanics theory. It examines the coupling between mechanical and thermal aspects in thermodynamic laws and the challenges in determining properties for constitutive equations. The paper then reviews measurement methods for determining mechanical and thermal properties, such as thermal expansion coefficients, highlighting the pros and cons of each technique. Given that mechanics and material properties are applied at local points, the paper also addresses the importance of considering the structure in analysis. Lastly, it discusses the advantages and disadvantages of traditional analytical methods, simulations, and artificial intelligence in evaluating structural characteristics. As the thermo-mechanical behavior of packages becomes more complex, the integration of mechanics, material property determination, and structural considerations will be crucial in understanding and optimizing microelectronics packaging.
微电子封装的最新进展,包括晶片架构和异质集成,引入了复杂的互连和不同材料的集成。这些发展使封装的热和机械行为复杂化,影响半导体的性能和可靠性。为了解决这些挑战,需要一种系统的方法来分析微电子封装的热机械行为。本文回顾了分析此类行为的框架和方法,重点介绍了三个关键工具的集成:力学理论,材料性能确定和结构模式考虑。本文特别超越了对力学理论、材料性能确定和结构模式这三种工具的单独回顾。相反,它侧重于系统地分析这三个工具之间的相互联系。为了清晰地定义局部力学理论,适当的材料性能测定是必不可少的。此外,随着结构模式的日益复杂,结构分析的本构方程集成也变得越来越具有挑战性。因此,透彻理解和分析这三种工具之间的关系和互补性至关重要。本文首先讨论了力学理论中应用的热机平衡规律和耗散。它检查了在热力学定律和确定本构方程性质的挑战之间的机械和热方面的耦合。然后,本文回顾了用于确定机械和热性能(如热膨胀系数)的测量方法,并强调了每种技术的优缺点。考虑到力学和材料性能在局部点上应用,本文还讨论了在分析中考虑结构的重要性。最后,讨论了传统分析方法、仿真方法和人工智能在结构特性评估中的优缺点。随着封装的热机械行为变得越来越复杂,力学、材料性能确定和结构考虑的集成将是理解和优化微电子封装的关键。
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引用次数: 0
Material properties and grinding mechanism of SiC laser slicing wafers SiC激光切片片的材料特性及磨削机理
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-09 DOI: 10.1016/j.mssp.2025.110303
Jingyuan Zheng , Qiusheng Yan , Junqiang Lin , Lijie Wu , Shupei Wang
The study systematically investigated the efficient and low-damage removal of the gradient damage layer generated during the laser slicing of silicon carbide (SiC) wafers. The behavior of material removal in the laser-induced modified layer was explored in depth. Although laser slicing enables nearly zero material loss compared with conventional multi-wire sawing, the laser-induced damage layer significantly deteriorates the surface quality during subsequent ultra-smooth grinding processes. Ultra-precision grinding experiments combined with nano-scratch and nano-indentation tests revealed the brittle-to-ductile transition behavior of the SiC-modified layer during grinding. The material removal mechanism evolved in two stages with increasing depth: brittle fracture dominated within the 0–40 μm region, resulting in poor surface integrity; meanwhile, plastic deformation became predominant within the 40–80 μm region, leading to a significant improvement in surface roughness (Sa reduced to 28 nm). Further investigations revealed that the critical load for the brittle-to-ductile transition decreased significantly with increasing material removal (a reduction of 32.33 mN at a removal depth of 60 μm compared to 40 μm), suggesting that removing the damaged layer lowers the energy barrier for plastic deformation. Based on these findings, a physical model of the surface of SiC laser slicing was established. This provides theoretical guidance for developing high-efficiency, low-damage grinding processes and promotes the practical application of laser slicing technology in wafer manufacturing.
本研究系统地研究了激光切割碳化硅(SiC)晶圆时产生的梯度损伤层的高效、低损伤去除方法。深入探讨了激光诱导改性层中材料的去除行为。尽管与传统的多线锯切相比,激光切割几乎可以实现零材料损耗,但在随后的超光滑磨削过程中,激光诱导损伤层会显著降低表面质量。超精密磨削实验结合纳米划痕和纳米压痕试验揭示了sic改性层在磨削过程中的脆性向延性转变行为。随着深度的增加,材料的去除机制分为两个阶段:0 ~ 40 μm区域以脆性断裂为主,导致表面完整性较差;同时,在40 ~ 80 μm范围内,塑性变形占主导地位,导致表面粗糙度显著提高(Sa降至28 nm)。进一步的研究表明,随着材料去除深度的增加,脆性到延性转变的临界载荷显著降低(去除深度为60 μm时,脆性到延性转变的临界载荷比去除深度为40 μm时降低了32.33 mN),这表明去除损伤层降低了塑性变形的能垒。在此基础上,建立了SiC激光切片表面的物理模型。这为开发高效、低损伤的磨削工艺提供了理论指导,促进了激光切片技术在晶圆制造中的实际应用。
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引用次数: 0
Advanced non-contact Raman/spectrophotometric deciphering of structural processes in sulfur-implanted/laser-annealed silicon 硫注入/激光退火硅结构过程的先进非接触拉曼/分光光度解译
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-09 DOI: 10.1016/j.mssp.2025.110333
Sergey I. Kudryashov , Ivan M. Podlesnykh , Valery A. Dravin , Michael S. Kovalev , Sergei G. Buga , George K. Krasin , Evgenia V. Ulturgasheva , Alena A. Nastulyavichus , Evgeny V. Kuzmin , Vadim A. Shakhnov , Nikita I. Dolzhenko , Anastasiya G. Bondarenko
Local hydrostatic stresses and nanograin dimensions were for the first time simultaneously measured inside sub-micron-thick sulfur-implanted (1018-1021 cm−3)/nanosecond-laser annealed surface silicon layers, using a combination of complementary Raman and near-IR transmission spectroscopy methods. Alternating negative spectral shifts of near-IR indirect absorption edge at the lower concentrations (1018-1019 cm−3) and positive shifts at the higher concentrations (1020-1021 cm−3) were related to local tensile and compressive hydrostatic stresses in the layers, respectively. Quantitatively accounting for the stress effect on the “red” optical-phonon Raman band shifts, grain dimensions were measured in the laser-annealed hyperdoped layers as a function of sulfur concentration in good agreement with the Hall-effect derived mean free path values for free carriers. Raman spectroscopy when facilitated by near-IR transmission spectroscopy, enables the innovative non-contact structural insight into the stress, nanostructure and carrier transport properties of the hyperdoped layers.
利用互补拉曼光谱和近红外透射光谱相结合的方法,首次同时测量了亚微米厚硫注入(1018-1021 cm−3)/纳秒激光退火表面硅层内部的局部静水应力和纳米晶粒尺寸。在较低浓度(1018 ~ 1019 cm−3)和较高浓度(1020 ~ 1021 cm−3)下,近红外间接吸收边缘的交替负光谱位移分别与层内局部拉伸和压缩静水应力有关。定量考虑应力对“红色”光声子拉曼带位移的影响,激光退火的超掺杂层中晶粒尺寸随硫浓度的变化与自由载流子的霍尔效应平均自由程值很好地吻合。在近红外透射光谱的促进下,拉曼光谱能够对超掺杂层的应力、纳米结构和载流子输运特性进行创新的非接触结构洞察。
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引用次数: 0
Graphene intercalation enhancing responsivity of Sb2Se3-based near-infrared photodetectors 石墨烯嵌入增强sb2se3基近红外探测器的响应性
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-08 DOI: 10.1016/j.mssp.2025.110323
Xuan Sun , Weijing Liu , Weike Wang , Yifan Wu , Khadeeja Bashir , Yuee Xie , Yuanping Chen
Although Sb2Se3 is a potential optoelectronic material to construct a high-performance near-infrared photodetectors, its rough surface, induced by unique atomic structure, leads to very low responsivities of the single material and its heterostructures. Here, an intercalation of graphene is used to improve photoresponse ability of Sb2Se3-based heterostructure, and the mechanism of carrier transport is analyzed systematically. The results indicate that the photoresponse of a heterostructure Sb2Se3/MoS2 can be improved significantly, for example, its responsivity (R) is enhanced 26-fold, reaching an exceptional value of 75 A/W; and the specific detectivity (D∗) is enhanced 5-fold, with a value of 6.7 × 1011 Jones. Our analysis indicates that the intercalation effectively suppressing the effect of Sb2Se3 surface defects, detailly, the transient absorption (TA) micro-spectroscopies reveal that graphene promotes the transport of carriers from Sb2Se3 to MoS2. Our work not only provides a good broadband especially near-infrared photodevices Sb2Se3/graphene/MoS2, but also offers an effective strategy for designing high-performance PDs by intercalations in heterostructures.
虽然Sb2Se3是一种潜在的构建高性能近红外光电探测器的光电材料,但由于其独特的原子结构导致其表面粗糙,导致其单一材料及其异质结构的响应率非常低。本研究采用石墨烯嵌入提高sb2se3基异质结构的光响应能力,并系统分析了载流子输运的机理。结果表明,Sb2Se3/MoS2异质结构的光响应特性得到了显著改善,其响应度R提高了26倍,达到75 a /W;比探测率(D *)提高了5倍,达到6.7 × 1011 Jones。我们的分析表明,嵌入层有效地抑制了Sb2Se3表面缺陷的影响,详细地说,瞬态吸收(TA)显微光谱显示石墨烯促进了载流子从Sb2Se3向MoS2的转移。我们的工作不仅提供了良好的宽带特别是近红外光器件Sb2Se3/石墨烯/MoS2,而且还提供了通过异质结构插入设计高性能光电器件的有效策略。
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引用次数: 0
Fully transparent synaptic transistors with a single channel layer enabling ternary logic via Fowler–Nordheim tunneling for in-memory computing 具有单通道层的全透明突触晶体管,通过Fowler-Nordheim隧道实现内存计算中的三元逻辑
IF 4.6 3区 工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC Pub Date : 2025-12-08 DOI: 10.1016/j.mssp.2025.110329
Chohyeon Park , Jung Wook Lim
Multivalued logic (MVL) is a promising alternative to binary logic in next-generation computing systems, enabling higher data density and lower circuit complexity. This study presents a fully transparent synaptic transistor-based MVL device that integrates logic and memory functionalities within a single device, as incorporating memory functionality can transform MVL devices into powerful platforms for in-memory computing. The proposed device, employing multilayered transparent electrodes and a CMOS-compatible single TiO2 channel layer, not only expands applicability to transparent electronics but also simplifies the fabrication process significantly. The device implements stable, well-defined ternary logic states via Fowler–Nordheim tunneling between the gate and source electrodes. In addition, the synaptic memory functionality of the device, governed by charge trapping at the channel/dielectric interface, enables 2048 distinct conductance states (11-bit precision) for short-term memory with a high linearity factor of 0.92 and ultra-low energy consumption (∼2.13 fJ), while supporting programmable logic-state modulation through long-term memory. The proposed fully transparent synaptic transistor-based ternary logic device, integrating both logic and memory functions, lays the foundation for simplified, energy-efficient, and versatile in-memory computing architectures.
在下一代计算系统中,多值逻辑(MVL)是二进制逻辑的一个很有前途的替代方案,可以实现更高的数据密度和更低的电路复杂性。本研究提出了一种完全透明的基于突触晶体管的MVL器件,该器件将逻辑和存储功能集成在单个器件中,因为集成存储功能可以将MVL器件转变为强大的内存计算平台。该器件采用多层透明电极和cmos兼容的单一TiO2通道层,不仅扩大了透明电子器件的适用性,而且大大简化了制造工艺。该器件通过栅极和源极之间的Fowler-Nordheim隧道实现稳定、定义良好的三元逻辑状态。此外,该器件的突触记忆功能由通道/介质接口处的电荷捕获控制,可实现2048种不同的电导状态(11位精度),具有0.92的高线性系数和超低能耗(~ 2.13 fJ),同时支持通过长期记忆进行可编程逻辑状态调制。基于全透明突触晶体管的三元逻辑器件,集成了逻辑和存储功能,为简化、节能和通用的内存计算架构奠定了基础。
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引用次数: 0
期刊
Materials Science in Semiconductor Processing
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