Optical Materials最新文献_第5页

Exploring donor-acceptor derivatives of quinoxaline-6-carbonitrile a strategy for efficient orange OLEDs via tunable photophysical properties 探索喹诺啉-6-碳腈的供体-受体衍生物：利用可调光物理性质制备高效橙色有机发光二极管的策略

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-10 DOI: 10.1016/j.optmat.2026.117857

Lukas Dvylys , Rasa Keruckiene , Matas Guzauskas , Karolis Leitonas , Rita Sadzeviciene , Linas Labanauskas , Juozas V. Grazulevicius

A systematic molecular design strategy was employed to synthesize four novel cyano-substituted quinoxaline donor–acceptor (D-A) derivatives via a two-step condensation and Buchwald–Hartwig coupling route, aiming to develop efficient thermally activated delayed fluorescence (TADF) emitters. The design combines two weak electron-withdrawing moieties, quinoxaline and cyano, into a strong π-accepting quinoxaline-6-carbonitrile unit, coupled with different electron donors, phenothiazine, phenoxazine, dimethylacridan, and carbazole, to study the influence of donor strength on molecular and photophysical properties. Quantum chemical calculations revealed twisted D-A conformations and separated frontier orbitals, resulting in small singlet–triplet energy gaps (0.02–0.04 eV) and favourable spin–orbit coupling, conducive to TADF. Time-resolved photoluminescence confirmed prompt and delayed fluorescence components, consistent with efficient triplet harvesting. Among the series, the dimethylacridan-based quinoxaline-6-carbonitrile derivative exhibited the smallest energy gap and strongest charge-transfer character. OLEDs fabricated via vacuum deposition achieved a maximum external quantum efficiency of 3.91 % with negligible efficiency roll-off, demonstrating that dual electron-withdrawing design effectively stabilizes the charge-transfer state and enhances device performance.

采用系统的分子设计策略，通过两步缩合和Buchwald-Hartwig偶联途径合成了四种新型的氰基取代喹诺啉给受体（D-A）衍生物，旨在开发高效的热激活延迟荧光（TADF）发射体。本设计将两个弱吸电子基团喹诺啉和氰基组合成强吸π的喹诺啉-6-碳腈单元，并与不同的电子给体吩噻嗪、吩恶嗪、二甲基吖啶丹和咔唑偶联，研究给体强度对分子和光物理性质的影响。量子化学计算揭示了扭曲的D-A构象和分离的前沿轨道，导致小的单重态-三重态能隙（0.02-0.04 eV）和有利的自旋轨道耦合，有利于TADF。时间分辨光致发光证实了提示和延迟荧光成分，符合有效的三重态收获。其中，以二甲基吖啶丹为基础的喹草啉-6-碳腈衍生物具有最小的能隙和最强的电荷转移特性。通过真空沉积制备的oled的最大外量子效率为3.91%，效率滚降可以忽略不计，这表明双吸电子设计有效地稳定了电荷转移状态并提高了器件性能。

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引用次数: 0

Influence of gold microbump array size on the hybrid lattice plasmon resonance quality 金微凸包阵列尺寸对杂化晶格等离子体共振质量的影响

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-10 DOI: 10.1016/j.optmat.2026.117873

Rodrigas Liudvinavičius, Evaldas Stankevičius

In recent years, plasmonics has gained significant attention due to its potential in various applications, such as surface-enhanced Raman spectroscopy, nanophotonics, and sensing technologies. This growing interest is driven by recent progress in direct laser writing, which overcomes lithography-based techniques and offers the creation of large-scale plasmonic structures. However, the production of high-scale plasmonic arrays does not always ensure a high plasmonic resonance signal. This study investigates the influence of array size on the optical plasmonic response of gold microbump arrays fabricated using the direct laser writing technique. Additionally, it examines the role of beam-limiting apertures in measuring the optical properties of gold bumps arrays. The results provide insights into optimizing the fabrication process of plasmonic arrays, enabling a reduction in production time while preserving the quality factor of plasmonic resonances. These findings have practical implications in sensing applications, paving the way for efficient and high-performance plasmonic technologies.

近年来，等离子体动力学由于其在表面增强拉曼光谱、纳米光子学和传感技术等方面的应用潜力而受到广泛关注。这种日益增长的兴趣是由直接激光书写的最新进展所驱动的，它克服了基于平版印刷的技术，并提供了大规模等离子体结构的创建。然而，大规模等离子体阵列的生产并不总是保证高等离子体共振信号。本文研究了阵列尺寸对激光直接写入技术制备的金微凸点阵列光等离子体响应的影响。此外，本文还研究了限束孔径在测量金凸点阵列光学特性中的作用。该结果为优化等离子体阵列的制造工艺提供了见解，能够在保持等离子体共振质量因子的同时减少生产时间。这些发现在传感应用中具有实际意义，为高效和高性能等离子体技术铺平了道路。

引用次数: 0

Synthesis, characterization, and enhanced nonlinear optical properties of octyloxy-substituted azo-imine copper(II) complex: Experimental and theoretical studies 辛氧基取代偶氮亚胺铜（II）配合物的合成、表征和增强非线性光学性能：实验和理论研究

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.optmat.2026.117859

Md. Mohon Shek , Md. Shakil Hossen , Md. Murshidul Islam , Shofiur Rahman , Abdullah N. Alodhay , Ennio Zangrando , Md Chanmiya Sheikh , Ryuta Miyatake , Md. Monirul Islam , Md. Rabiul Karim

A novel azo Schiff base ligand 5-((E)-(4-(octyloxy)phenyl)diazenyl)-2-((E)-((4-(octyloxy)phenyl)imino)methyl)phenol (HL) and its Cu(II) complex [CuL₂] were synthesized and characterized to evaluate their structural and nonlinear optical (NLO) properties. Single-crystal X-ray diffraction showed a distorted square-planar geometry around the Cu(II) ion. Spectroscopic analyses (FTIR, UV–Vis, NMR) confirmed the formation of the complex, while thermogravimetric analysis demonstrated remarkable thermal endurance. Complexation significantly reduced the HOMO–LUMO gap, facilitating stronger intramolecular charge transfer (ICT). Density Functional Theory (DFT) calculations agreed with experimental results, which demonstrated a sharp reduction in the HOMO–LUMO gap upon complexation (3.23 eV in HL to 0.14 eV in [CuL₂]), favoring intramolecular charge transfer (ICT). The [CuL₂] complex shows a first-order hyperpolarizability (β_total) of 6451.87 a.u., nearly 15 times greater than that of urea, underscoring its strong potential for high-performance NLO applications. Overall, the findings establish that the [CuL₂] complex combines structural stability, along with enhanced electronic and NLO characteristics, making it a promising candidate for future photonic and optoelectronic applications.

合成了一种新型偶氮希夫碱配体5-(（E)-（4-（辛氧基）苯基）二氮基）-2-（（E)-（4-（辛氧基）苯基）亚氨基）甲基）苯酚（HL）及其Cu（II）配合物[CuL2]，并对其结构和非线性光学性质进行了表征。单晶x射线衍射显示Cu（II）离子周围呈扭曲的方平面几何形状。光谱分析（FTIR, UV-Vis， NMR）证实了配合物的形成，而热重分析显示了显著的热耐力。络合作用显著减小了HOMO-LUMO间隙，促进了更强的分子内电荷转移（ICT）。密度泛函理论（DFT）计算结果与实验结果一致，实验结果表明，配合后HOMO-LUMO间隙急剧减小（HL为3.23 eV， [CuL2]为0.14 eV），有利于分子内电荷转移（ICT）。[CuL2]配合物的一阶超极化率（β总）为6451.87 a.u.，是尿素的近15倍，显示出其在高性能NLO应用方面的强大潜力。总的来说，研究结果表明，[CuL2]配合物结合了结构稳定性，以及增强的电子和NLO特性，使其成为未来光子和光电子应用的有希望的候选者。

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引用次数: 0

Efficient and Stable Broadband Gd3Ga5O12: Cr3+ garnet phosphor for NIR LED applications 用于近红外LED应用的高效稳定宽带Gd3Ga5O12: Cr3+石榴石荧光粉

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.optmat.2026.117855

Junhao Li , Jing Li , Yaru Peng , Shuai Liao , Heping zhao , Xi Chen , Liangliang Zhang , Li Chen

Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) have Wide-ranging application prospects in fields such as night vision lighting, food detection, fluorescence labeling, and biological imaging. However, there is currently a lack of highly efficient phosphors covering the 700–1100 nm spectral range, and challenges remain in improving the efficiency and thermal stability. In this work, the Gd₃Ga₅O₁₂: Cr³⁺ garnet phosphor was successfully synthesized, which exhibits good thermal stability (I_180°C/I_30°C = 93 %). When current was 10 mA, the fabricated pc-LED demonstrated an impressive photoelectric conversion efficiency reaching 28.11 %. After incorporating Yb³⁺, the emission wavelength range was broadened by 200 nm. The Gd₃Ga₅O₁₂: Cr³⁺, Yb³⁺ phosphor achieved zero thermal quenching at 180 °C, and the corresponding pc-LED still maintained an excellent photoelectric efficiency of 25.86 % at 10 mA. The Gd₃Ga₅O₁₂: 0.1Cr³⁺, 0.02 Yb³⁺ is an broad emission band, high conversion efficiency, and outstanding thermal stability NIR phosphor with high potential for compact high-power NIR pc-LEDs.

近红外磷光转换发光二极管（NIR pc- led）在夜视照明、食品检测、荧光标记、生物成像等领域有着广泛的应用前景。然而，目前缺乏覆盖700 - 1100nm光谱范围的高效荧光粉，并且在提高效率和热稳定性方面仍然存在挑战。本文成功合成了Gd3Ga5O12: Cr3+石榴石荧光粉，具有良好的热稳定性（I180°C/I30°C = 93%）。当电流为10 mA时，pc-LED显示出令人印象深刻的光电转换效率，达到28.11%。加入Yb3+后，发射波长范围扩大了200 nm。Gd3Ga5O12: Cr3+， Yb3+荧光粉在180℃下实现零热猝灭，对应的pc-LED在10 mA时仍保持25.86%的优异光电效率。Gd3Ga5O12: 0.1Cr3+， 0.02 Yb3+是一种宽发射带、高转换效率和出色热稳定性的近红外荧光粉，具有高潜力用于紧凑的高功率近红外pc- led。

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引用次数: 0

Designing coumarin–benzoic acid-based novel binary liquid for optical limiting and liquid-core optical fiber fillers 设计以香豆素-苯甲酸为基的新型二元限光液和液芯光纤填料

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.optmat.2026.117870

Shradha Lakhera , Meenakshi Rana , A. Dhanusha , T.C. Sabari Girisun , Shruti Sharma , Papia Chowdhury

A novel nonlinear optical liquid was introduced by combining para-aminobenzoic acid (PABA) and 7-diethylamino-4-methylcoumarin (7DMC) and tested for its optical limiting characteristics. Seven different combinations of varying concentrations of PABA and 7DMC had been synthesized. The absorption spectra of these samples were obtained in a wavelength range of 300 and 420 nm, with a peak wavelength higher than that in the case of individual PABA and 7DMC. The band gap of the combinations was lower than compared of the probe compounds. A single broad photoluminescence spectrum supported the formation of intermolecular electrostatic bonding between PABA and 7DMC. The photoluminescence and vibrational spectra confirmed that there was no vacancy, defect, or foreign compound formed in the combination. The Z-Scan spectra gave a valley about the origin for all the combinations, indicating the occurrence of the reverse saturable absorption. The designed liquid can be proven to be of great importance in optical liquids and liquid optical fibres.

介绍了一种由对氨基苯甲酸（PABA）和7-二乙胺-4-甲基香豆素（7DMC）组成的非线性光学液体，并对其光限特性进行了测试。合成了7种不同浓度的PABA和7DMC的不同组合。分别在300和420 nm波长范围内获得了样品的吸收光谱，其峰值波长高于单个PABA和7DMC的吸收光谱。与探针化合物相比，这些化合物的带隙更小。单宽光致发光光谱支持PABA与7DMC分子间静电键的形成。光致发光和振动光谱证实，在该组合中没有空位、缺陷或形成外来化合物。z扫描光谱给出了所有组合的原点附近的一个谷，表明发生了反向饱和吸收。所设计的液体在光学液体和液体光纤中具有重要的意义。

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引用次数: 0

Study on hydrothermal synthesis and photocatalytic performance of CuS/Na2Ti3O7 heterojunction cu /Na2Ti3O7异质结水热合成及光催化性能研究

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.optmat.2026.117867

Cuicui Wang , Chuanli Zhang , Anqi Cai , Zhizun Yue , Hongxia Ren , Shuxian Dong , Haoyu Li , Hairong Yin , Yuanting Wu

Developing highly efficient visible-light-responsive photocatalysts represents a central challenge in the field of environmental remediation. In this study, a CuS/Na₂Ti₃O₇ (NTO) heterojunction was constructed in situ on a titanium substrate via a facile hydrothermal method. Systematic characterizations (including XRD, SEM/TEM, XPS, UV–Vis DRS, PL, EPR, etc.) revealed that the heterojunction not only broadens the visible-light absorption range but also, due to its optimized band alignment, significantly suppresses the recombination of photogenerated electron–hole pairs, thereby enhancing interfacial charge transfer efficiency. Performance evaluation confirmed that CuS/NTO achieves a degradation rate of 83 % for methylene blue (MB) under visible-light irradiation. This pronounced photocatalytic activity further endows the material with excellent antibacterial properties, exhibiting inactivation rates of 99.9 % and 90 % against Escherichia coli and Staphylococcus aureus, respectively. This work not only elucidates a preparation strategy for high-performance heterojunction photocatalysts, but also deepens the understanding of charge transfer pathways through mechanistic analysis, offering clear guidance for designing novel photocatalytic materials applicable to wastewater treatment and self-cleaning surfaces.

开发高效的可见光响应光催化剂是环境修复领域的核心挑战。本研究采用水热法在钛基板上原位构建了cu /Na2Ti3O7 （NTO）异质结。系统表征（包括XRD， SEM/TEM， XPS, UV-Vis DRS， PL， EPR等）表明，异质结不仅拓宽了可见光吸收范围，而且由于其优化的能带排列，显著抑制了光生电子-空穴对的重组，从而提高了界面电荷转移效率。性能评价证实，在可见光照射下，cu /NTO对亚甲基蓝（MB）的降解率达到83%。这种明显的光催化活性进一步赋予了材料优异的抗菌性能，对大肠杆菌和金黄色葡萄球菌的灭活率分别为99.9%和90%。这项工作不仅阐明了高性能异质结光催化剂的制备策略，而且通过机理分析加深了对电荷转移途径的理解，为设计适用于废水处理和自清洁表面的新型光催化材料提供了明确的指导。

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引用次数: 0

Self-doped quinacridone-fluorene alcohol-soluble conjugated polymer as an efficient cathode interlayer for organic solar cells 自掺杂喹吖啶酮-芴醇溶共轭聚合物作为有机太阳能电池的高效阴极中间层

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.optmat.2026.117864

Weibo Yang , Siqian Qu , Shaopeng Fu , Yanfei Shi , Zenghui Cao , Zhengxia Guo , Chengxiao Huang , Yifeng Lei , Jianfeng Li

Cathode interface layers fulfill a crucial function in improving the stability and power conversion efficiency (PCE) of organic solar cells by optimizing the ohmic contacts, energy level alignment and charge extraction. Water/alcohol-soluble conjugated polymers (WSCPs) have been widely used due to their excellent photovoltaic properties and unique solubility. However, their relatively low conductivity severely limits their further development. To solve this problem, a novel polymer PQA-FN, which is soluble in methanol solution, was synthesized based on the electron-deficient group quinacridone (QA) and the fluorene unit possessing a polar side chain. Introducing it into the classical OSCs system (PTB7-Th: PC₇₁BM) as a cathode interfacial material significantly improves the charge extraction and elevates the short-circuit current density (J_SC) and the fill factor (FF), resulting in devices with a PCE reaching 8.69 %. Meanwhile, PQA-FN exhibits self-doping properties that effectively reduce the cathode work function and suppress dark current leakage. This study provides valuable insights into developing high-performance WSCPs as efficient CILs for OSCs applications.

阴极界面层通过优化有机太阳能电池的欧姆接触、能级排列和电荷提取，对提高电池的稳定性和功率转换效率起着至关重要的作用。水/醇溶共轭聚合物（WSCPs）由于其优异的光伏性能和独特的溶解性而得到了广泛的应用。然而，它们相对较低的电导率严重限制了它们的进一步发展。为了解决这一问题，以缺电子基团喹吖啶酮（QA）和具有极性侧链的芴单元为基础，合成了一种可溶于甲醇溶液的新型聚合物PQA-FN。将其作为阴极界面材料引入经典OSCs系统（PTB7-Th: PC71BM）中，可显著改善电荷提取，提高短路电流密度（JSC）和填充因子（FF），使器件的PCE达到8.69%。同时，PQA-FN具有自掺杂特性，可有效降低阴极功函数，抑制暗电流泄漏。本研究为开发高性能wscp作为OSCs应用的高效CILs提供了有价值的见解。

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引用次数: 0

Enhanced electrochromic performance of sputtered NiWO4 thin films by post-annealing 后退火法提高溅射NiWO4薄膜的电致变色性能

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-09 DOI: 10.1016/j.optmat.2026.117881

Jeonghun Yang , Kwang-Mo Kang , Young-Hun Kim , Jihun Kim , Yoon-Chae Nah , Dong Hun Kim

This study investigates the structural and electrochromic properties of sputter-deposited, post-annealed NiWO₄ thin films for electrochromic smart window applications. At room temperature, the as-deposited film exhibited a columnar structure, which became denser upon annealing. Annealing up to 400 °C led to grain growth and pore formation, which enhanced electrochromic properties of the film; however, functionality declined with annealing beyond 400 °C. Optimally annealed NiWO₄ films exhibited an exceptional transmittance modulation of 94 % at 550 nm and cyclic stability in the KOH electrolyte, outperforming conventional anodic electrochromic NiO films. Moreover, these films remained highly transparent in their as-prepared state, eliminating the need for preprocessing. X-ray photoelectron spectroscopy analysis revealed reversible Ni²⁺/Ni³⁺ redox reactions during OH⁻ ion insertion/extraction as the underlying electrochromic mechanism. W substitution at Ni sites during annealing generates defects enhancing the electrochromic properties. This study highlights NiWO₄ films as next-generation electrochromic materials for smart windows, adaptive displays, and energy-efficient optical devices, providing high transmittance modulation and intrinsic stability without any initial activation.

本研究研究了用于电致变色智能窗口应用的溅射沉积后退火NiWO4薄膜的结构和电致变色性能。在室温下，沉积膜呈柱状结构，退火后致密。退火温度高达400℃，晶粒生长和孔隙形成，增强了薄膜的电致变色性能；然而，当退火温度超过400℃时，功能性下降。优化后的NiWO4薄膜在550nm处表现出94%的透过率调制，并且在KOH电解质中具有循环稳定性，优于传统的阳极电致变色NiO薄膜。此外，这些薄膜在其制备状态下保持高度透明，无需预处理。x射线光电子能谱分析显示，OH -离子插入/提取过程中可逆的Ni2+/Ni3+氧化还原反应是潜在的电致变色机理。在退火过程中，镍位上的W取代产生了缺陷，增强了电致变色性能。该研究强调NiWO4薄膜作为下一代电致变色材料，可用于智能窗口、自适应显示器和节能光学器件，具有高透射率调制和内在稳定性，无需任何初始激活。

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引用次数: 0

Surface-doped printable semiconducting polymer films for efficient charge extraction in scalable organic photovoltaics 可扩展有机光伏电池中用于有效电荷提取的表面掺杂可印刷半导体聚合物薄膜

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-08 DOI: 10.1016/j.optmat.2026.117863

Minwoo Nam

To improve the commercial viability of organic photovoltaics (OPVs), alternative hole transport layer (HTL) materials and scalable fabrication methods are required to overcome the limitations of conventional thermally evaporated metal oxides such as MoO₃. Here, an efficient inverted OPV architecture employing surface-doped printable semiconducting polymer HTLs is demonstrated. A polymer film is transferred onto the active layer via water-transfer printing and subsequently p-doped at room temperature using 12-molybdophosphoric acid hydrate. This post-deposition treatment forms a spatially confined doped region, providing a stable polymer-based hole-transporting interface with improved electrical characteristics. In comparison with conventional MoO₃-based counterparts, OPVs incorporating polymer HTLs exhibit superior performance and stability, resulting from reduced trap densities and suppressed interfacial recombination. The polymer HTLs also show high reproducibility and maintain performance when scaled to larger active areas. This solution-processable and vacuum-free HTL strategy provides a scalable and structurally compatible interface design platform for advanced organic and printed electronics.

为了提高有机光伏（opv）的商业可行性，需要替代空穴传输层（HTL）材料和可扩展的制造方法来克服传统热蒸发金属氧化物（如MoO3）的局限性。本文展示了一种采用表面掺杂可印刷半导体聚合物HTLs的高效倒置OPV结构。通过水转移印刷将聚合物薄膜转移到活性层上，随后在室温下使用12-钼磷酸水合物进行p掺杂。这种沉积后处理形成了一个空间受限的掺杂区域，提供了一个稳定的基于聚合物的空穴传输界面，并改善了电特性。与传统的基于moo3的opv相比，含有聚合物HTLs的opv由于降低了陷阱密度和抑制了界面重组，表现出更好的性能和稳定性。聚合物HTLs在扩展到更大的活性区域时也表现出高再现性和保持性能。这种解决方案可处理和真空的html策略为先进的有机和印刷电子产品提供了可扩展和结构兼容的界面设计平台。

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引用次数: 0

Interfacial bidentate passivation by a hydrophobic bipyridine molecule for boosting the performance of perovskite solar cells 疏水联吡啶分子的界面双齿钝化以提高钙钛矿太阳能电池的性能

IF 4.2 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Optical Materials

Pub Date : 2026-01-08 DOI: 10.1016/j.optmat.2026.117871

Wenqian Chang, Xuwu Xiang, Yan Wang, Weikang You, Haonan Xue, Yu Zhou, Jie Zhou

Inverted (p-i-n) perovskite solar cells (PSCs) have gained popularity due to their superior operational stability compared to typical n-i-p structures, especially demonstrating significant advantages in long-term durability in practical application environments. However, non-radiative recombination losses, especially at the perovskite/electronic transport layer (ETL) interface, often lead to lower power conversion efficiency (PCE). Interface modification is an effective method for enhancing the performance of inverted PSCs. In this study, 4,4′-di-tert-butyl-2,2′-bipyridine (DTBP) is used to modify the upper interface of the perovskite layer, optimizing energy-level matching between the perovskite and C₆₀ layers. The bipyridine groups passivate defects through bidentate coordination with Pb²⁺. Additionally, the hydrophobic tert-butyl groups around the DTBP molecules form a dense protective layer on the perovskite surface. The contact angle test shows that the water contact angle increases, significantly inhibiting the erosion of the perovskite lattice by environmental water molecules. Ultimately, a PCE of 25.3 % was achieved. In the stability test, the unpackaged device could still maintain an initial efficiency of 90 % after continuous operation for 240 h at 50 % relative humidity in air. This study achieved a simultaneous improvement in efficiency and stability through molecular interface engineering, providing a new design concept for the development of highly stable and efficient inverted PSCs.

与典型的n-i-p结构相比，倒置（p-i-n）钙钛矿太阳能电池（PSCs）由于其优越的运行稳定性而受到欢迎，特别是在实际应用环境中表现出长期耐用性的显着优势。然而，非辐射复合损失，特别是在钙钛矿/电子输运层（ETL）界面，往往导致较低的功率转换效率（PCE）。界面修饰是提高倒插式压电陶瓷性能的有效方法。本研究采用4,4′-二叔丁基-2,2′-联吡啶（DTBP）修饰钙钛矿层的上界面，优化钙钛矿层与C60层的能级匹配。联吡啶基团通过与Pb2+的双齿配位钝化缺陷。此外，DTBP分子周围的疏水叔丁基在钙钛矿表面形成致密的保护层。接触角测试表明，水接触角增大，明显抑制了环境水分子对钙钛矿晶格的侵蚀。最终，PCE达到25.3%。在稳定性试验中，未封装的装置在50%的相对湿度空气中连续运行240 h后，仍能保持90%的初始效率。本研究通过分子界面工程实现了效率和稳定性的同步提高，为开发高稳定、高效的倒置psc提供了新的设计理念。

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引用次数: 0