Solar Energy Materials and Solar Cells最新文献_第10页

Study on the mechanism of advanced pre-degradation on hydrogenation of multi-crystalline silicon solar cells 多晶硅太阳能电池氢化高级预降解机理研究

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-27 DOI: 10.1016/j.solmat.2024.113187

Jianbo Shao , Xi Xi , Guilin Liu , Guofeng Yang , Weifu Dong , Guoqing Chen , Meilin Peng , Qiqi Wang , Meiling Zhang , Meixian Huang , Zhipeng Liu

The electrical performance of monocrystalline silicon solar cells was significantly improved under hydrogenation alone with appropriate conditions, while the similar improvements of multi-crystalline silicon (mc-Si) solar cells were relatively slight. In this paper, an advanced pre-degradation (Adv.Pre-Deg) was introduced to improve the hydrogenation effect and enhance the performance of mc-Si solar cells. Meanwhile, further studies were conducted on the influence mechanism of Adv.Pre-Deg on subsequent hydrogenation, and some microscopic detection was applied to characterize the effect of Adv.Pre-Deg on the following hydrogenation. The results indicated that Adv.Pre-Deg only slightly influenced the crystallinity, dangling bonds, and defects within the surface dielectric layer, which illustrated that Adv.Pre-Deg hardly harmed the dielectric layer. Then, Raman imaging demonstrated that Adv.Pre-Deg displayed primary assistance in stimulating impurities or defects in silicon bulk in advance. According to the detection of the Si-H bond, we also concluded that the effective performance improvement on mc-Si silicon solar cells through Adv.Pre-Deg & hydrogenation was due to the pre-activation of impurities or defects by Adv.Pre-Deg. Moreover, Adv.Pre-Deg enhanced the passivation effect of hydrogenation on interstitial

{Fe}_{i}^{+}

from 30.3%_rel. to 89.1%_rel. and dislocation defects from 21.92%_rel. to 46.18%_rel., doubling the improvement of bulk passivation on mc-Si. Therefore, the method of combining Adv.Pre-Deg with hydrogenation aims to be applied to other types of solar cells and focus on improving performance and suppressing various degradations, such as TOPCon and HJT.

在适当的条件下，单晶硅太阳能电池在单独氢化条件下的电气性能得到了显著改善，而多晶硅（mc-Si）太阳能电池的类似改善则相对较小。本文引入了先进的预降解（Adv.Pre-Deg）技术，以改善氢化效果，提高多晶硅太阳能电池的性能。同时，进一步研究了Adv.Pre-Deg对后续析氢的影响机理，并应用一些微观检测方法来表征Adv.Pre-Deg对后续析氢的影响。结果表明，Adv.Pre-Deg 只对表面介电层的结晶度、悬空键和缺陷产生轻微影响，说明 Adv.Pre-Deg 几乎不会对介电层造成损害。然后，拉曼成像表明，Adv.Pre-Deg 主要有助于提前激发硅体中的杂质或缺陷。此外，Adv.Pre-Deg 还增强了氢化对间隙 Fei+ 的钝化效果，从 30.3%rel. 提高到 89.1%rel.，对位错缺陷的钝化效果从 21.92%rel. 提高到 46.18%rel.，使晶体硅的体钝化效果提高了一倍。因此，Adv.Pre-Deg 与氢化相结合的方法有望应用于其他类型的太阳能电池，重点是提高性能和抑制各种退化，如 TOPCon 和 HJT。

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引用次数: 0

Photoresponsive conductive polymer network based on azobenzene bridging crosslinked polycarbazole for boosting solar thermal storage 基于偶氮苯桥接交联聚咔唑的光致伸缩导电聚合物网络，用于促进太阳能热存储

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-27 DOI: 10.1016/j.solmat.2024.113184

Seda Sert , Rukiye Ayranci , Gülbanu Koyundereli Çılgı , Metin Ak

Azobenzene is one of the most extensively researched multifunctional chromophores and azobenzene including materials has a wide variety of applications due to their photoisomerization behavior. In this study, electroactive and light-harvesting carbazole and photoresponsive azobenzene units have been combined with a special macromolecular design. In this design the azo groups can be effectively isomerized in solid state, and free-standing films can be obtained by the electrochemical method. Thermal characterizations of both monomer and polymer have been performed and isomerization kinetics and solar-thermal properties have been investigated. The half-life at 60 °C and the gravimetric energy storage density of polymer was calculated as 103 min and 179.9 j g⁻¹, respectively. Cross-linked polycarbazole structure causes dramatically increased solar thermal storage and half-life compared to respective monomer and brought unexpected mechanical and solvatochromic properties.

偶氮苯是研究最为广泛的多功能发色团之一，由于其光异构化行为，包括偶氮苯在内的材料具有广泛的应用。在这项研究中，一种特殊的大分子设计将具有电活性和光收集功能的咔唑和具有光致伸缩性的偶氮苯单元结合在一起。在这种设计中，偶氮基团可在固态下有效异构，并可通过电化学方法获得独立薄膜。研究人员对单体和聚合物进行了热特性分析，并研究了异构化动力学和日热特性。计算得出聚合物在 60 °C 时的半衰期为 103 分钟，重量储能密度为 179.9 j g-1。与各自的单体相比，交联聚咔唑结构大大提高了太阳能热储存和半衰期，并带来了意想不到的机械和溶解变色特性。

引用次数: 0

Numerical investigation on the thermal performance of a molten salt tank under different electric heating method 不同电加热方法下熔盐罐的热性能数值研究

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-25 DOI: 10.1016/j.solmat.2024.113183

Yuanjing Wang , Jinan Liu , Xin Ma , Yuming Ouyang , Dalong Zhu , Yanping Zhang

Two-tank molten salt (MS) thermal energy storage (TES) technology is an efficient and widely used energy storage technology. This study develops a two-dimensional discrete model (2DIM) using the Modelica language to accurately and quickly represent molten salt temperature distribution and heat loss, applicable to system-level analysis in thermal power systems. It also uncovers variations in heat loss, cooling rate, and required auxiliary electric heating power across different tank volumes, liquid levels, and MS temperatures, offering guidance for optimizing design, energy management, and operational strategies. Additionally, the study examined the impact of different electric heater placements on the performance of the thermal storage system. The results show that heating the gas inside the tank is more effective than traditional direct electric heating, reducing molten salt heat loss by 25.89 % and increasing energy storage efficiency by 0.17 %.The research provide a reference for the study of efficient utilization of TES tank in different thermal systems.

双罐熔盐（MS）热能存储（TES）技术是一种高效且应用广泛的储能技术。本研究使用 Modelica 语言开发了一个二维离散模型 (2DIM)，以准确、快速地表示熔盐温度分布和热损失，适用于热电系统的系统级分析。它还揭示了不同储罐容积、液位和 MS 温度下热量损失、冷却率和所需辅助电加热功率的变化，为优化设计、能源管理和运营策略提供指导。此外，该研究还考察了不同电加热器位置对蓄热系统性能的影响。研究结果表明，加热储热罐内的气体比传统的直接电加热更有效，可减少 25.89% 的熔盐热损失，提高 0.17% 的储能效率。

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引用次数: 0

A multicolored polymer for dynamic military camouflage electrochromic devices 用于动态军用迷彩电致变色装置的多色聚合物

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-24 DOI: 10.1016/j.solmat.2024.113180

Kaiwen Lin , Changjun Wu , Yunxu Zhou , Jingze Li , Xiaoli Chen , Yuehui Wang , Baoyang Lu

Modern military operations usually require adaptable camouflage across multiple terrains, which prompted us to design and synthesize an electrochromic polymer named P (8,8'-(2,2′-dimethyl-9,9′-spirobi [fluorene]-7,7′-diyl)bis (3,3-bis(((2-ethylhexyl)oxy)methyl)-6-methyl-3,4-dihydro-2H-thieno[3,4-b][1,4]dihydropine)) (PSBF-ProDOT) via direct (hetero)aromatic polymerization (DHAP). PSBF-ProDOT exhibits a yellow-green-blue-violet multicolor change at specific voltages, and its colors blend well with desert, grassland, wilderness, lake, and ocean environments, which hold promising application prospects in the field of military camouflage. Additionally, PSBF-ProDOT features fast response times (1.8 s for oxidation and 3.1 s for reduction), moderate coloration efficiency (80.7 cm² C⁻¹ at 424 nm), and low initial redox potential (1.08 V/−1.03 V), meeting the requirements for camouflage devices. Here, we present a deformable and simple dynamic military camouflage electrochromic device (DMCECD) based on PSBF-ProDOT. This device achieves camouflage by changing its color to adapt to the surrounding environment, which is controlled via a Bluetooth app on a smartphone. By fine-tuning the voltage with an accuracy of 0.1 V, we can control the color changes of the dynamic military camouflage device to harmonize with specific environmental hues, ensuring optimal concealment. The integration of the Bluetooth module, printed circuit board, and electrochromic component underscores the innovative potential of electrochromic technology in the field of dynamic military camouflage, illustrating the prospective applications for future dynamic camouflage. We believe that our work will further advance the exploration of dynamic military camouflage and broader multifaceted wearable display technologies.

现代军事行动通常需要适应多种地形的伪装，这促使我们设计并合成了一种电致变色聚合物，命名为 P (8,8'-(2,2′-dimethyl-9、9′-螺双[芴]-7,7′-二基）双（3,3-双（（（2-乙基己基）氧）甲基）-6-甲基-3,4-二氢-2H-噻吩并[3,4-b][1,4]二氢丙氨酸）（PSBF-ProDOT）。在特定电压下，PSBF-ProDOT 呈现出黄-绿-蓝-紫的多色变化，其颜色能很好地与沙漠、草原、荒野、湖泊和海洋环境相融合，在军事伪装领域具有广阔的应用前景。此外，PSBF-ProDOT 还具有响应速度快（氧化反应 1.8 秒，还原反应 3.1 秒）、着色效率适中（424 纳米波长下为 80.7 cm2 C-1）、初始氧化还原电位低（1.08 V/-1.03 V）等特点，符合伪装设备的要求。在此，我们提出了一种基于 PSBF-ProDOT 的可变形且简单的动态军用伪装电致变色装置（DMCECD）。该装置通过改变颜色来适应周围环境，从而实现伪装，并可通过智能手机上的蓝牙应用程序进行控制。通过对电压进行精度为 0.1 V 的微调，我们可以控制动态军用迷彩装置的颜色变化，使其与特定的环境色调相协调，从而确保最佳的隐蔽性。蓝牙模块、印刷电路板和电致变色组件的集成凸显了电致变色技术在动态军事迷彩领域的创新潜力，说明了未来动态迷彩的应用前景。我们相信，我们的工作将进一步推动对动态军事伪装和更广泛的多元可穿戴显示技术的探索。

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引用次数: 0

Universal interface engineering method for applying transition metal oxides in silicon heterojunction solar cell 在硅异质结太阳能电池中应用过渡金属氧化物的通用界面工程方法

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-24 DOI: 10.1016/j.solmat.2024.113170

Liqi Cao, Paul Procel, Yifeng Zhao, Jin Yan, Engin Özkol, Katarina Kovačević, Miro Zeman, Luana Mazzarella, Olindo Isabella

Transition metal oxide (TMO) thin films exhibit large bandgap and hold great potential for enhancing the performance of silicon heterojunction (SHJ) solar cells by increasing the short-circuit current density significantly. On the other hand, achieving precise control over the electrical properties of TMO layers is crucial for optimizing their function as efficient carrier-selective layer. This study demonstrates a general and feasible approach for manipulating the quality of several TMO films, aimed at enhancing their applicability in silicon heterojunction (SHJ) solar cells. The core of our method involves precise engineering of the interface between the TMO film and the underlying hydrogenated intrinsic amorphous silicon passivation layer by managing the reaction of the TMO on the surface. X-ray photoelectron spectroscopy spectra demonstrate that our methods can modify the oxygen content in TMO films, thereby adjusting their electronic properties. By applying this method, we have successfully fabricated WO_x-based SHJ solar cells with 23.30 % conversion efficiency and V₂O_x-based SHJ solar cells with 22.04 % conversion efficiency, while keeping n-type silicon-based electron-transport layer at the rear side. This research paves the way for extending such interface engineering methods to other TMO materials used as hole-transport layers in SHJ solar cells.

过渡金属氧化物（TMO）薄膜具有较大的带隙，可显著提高短路电流密度，在增强硅异质结太阳能电池性能方面具有巨大潜力。另一方面，实现对 TMO 层电学特性的精确控制对于优化其作为高效载流子选择层的功能至关重要。本研究展示了一种操纵多种 TMO 膜质量的通用可行方法，旨在提高它们在硅异质结 (SHJ) 太阳能电池中的适用性。我们方法的核心是通过管理 TMO 在表面上的反应，对 TMO 薄膜与底层氢化本征非晶硅钝化层之间的界面进行精确设计。X 射线光电子能谱光谱显示，我们的方法可以改变 TMO 薄膜中的氧含量，从而调整其电子特性。通过应用这种方法，我们成功制备了转换效率为 23.30% 的 WOx 基 SHJ 太阳能电池和转换效率为 22.04% 的 V2Ox 基 SHJ 太阳能电池，同时在后侧保留了 n 型硅基电子传输层。这项研究为将这种界面工程方法推广到 SHJ 太阳能电池中用作空穴传输层的其他 TMO 材料铺平了道路。

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引用次数: 0

AI-enabled design of extraordinary daytime radiative cooling materials 利用人工智能设计非凡的日间辐射冷却材料

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-23 DOI: 10.1016/j.solmat.2024.113177

Quang-Tuyen Le , Sih-Wei Chang , Bo-Ying Chen , Huyen-Anh Phan , An-Chen Yang , Fu-Hsiang Ko , Hsueh-Cheng Wang , Nan-Yow Chen , Hsuen-Li Chen , Dehui Wan , Yu-Chieh Lo

Here we developed an artificial intelligence (AI)–based deep generative model, combined with a one-dimensional convolutional neural network (1D-CNN), for the inverse design of extraordinary passive daytime radiative cooling (PDRC) materials in a probabilistic manner. This AI-enabled strategy delivered a comprehensive solution for the one-to-many mapping problem of inverse design by predicting the optical properties—specifically, the refractive index (n) and extinction coefficient (k)—of hypothetical new materials. We then used the Kramers–Kronig relations and Lorentz–Drude model to validate the predicted results, and discovered a new record-breaking PDRC material that provided a decrease of approximately 79 K relative to ambient temperature and of approximately 12 K relative to that provided by the conventional ideal selective emitter under conditions of perfect insulation and a perfect electric conductor substrate. This AI-extrapolated approach toward extraordinary PDRC materials provides new guidelines for designing PDRC materials and connects the gap between ideal selective emitters and real materials.

在此，我们开发了一种基于人工智能（AI）的深度生成模型，并将其与一维卷积神经网络（1D-CNN）相结合，以概率方式对非凡的被动日间辐射冷却（PDRC）材料进行逆向设计。通过预测假定新材料的光学特性，特别是折射率（n）和消光系数（k），这一人工智能战略为反向设计中的一对多映射问题提供了全面的解决方案。然后，我们使用克雷默-克罗尼格关系和洛伦兹-德鲁德模型来验证预测结果，并发现了一种创纪录的新型 PDRC 材料，在完美绝缘和完美电导体基底的条件下，该材料的温度相对于环境温度降低了约 79 K，相对于传统理想选择性发射器降低了约 12 K。这种通过人工智能推导出的非凡 PDRC 材料为设计 PDRC 材料提供了新的指导，并缩小了理想选择性发射器与实际材料之间的差距。

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引用次数: 0

Silicon surface texturing via TBAB-SDS composite additives enhanced copper-assisted chemical etching 通过 TBAB-SDS 复合添加剂增强铜辅助化学蚀刻的硅表面纹理形成

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-23 DOI: 10.1016/j.solmat.2024.113185

Yongqiang Wei , Huanlun Tong , Shaoyuan Li , Zhengxing Wang , Xi Yang , Xiuhua Chen , Fengshuo Xi , Wenhui Ma , Xinjie Bai

Uneven etching and low fabrication efficiency impede the large-scale applications of copper-assisted chemical etching (Cu-ACE) for texturing light-trapping structures on the surface of silicon wafers. To address this, a composite additive composed of tetrabutylammonium bromide (TBAB) and sodium dodecyl sulfate (SDS) was introduced into the Cu-ACE system. The results indicated that TBAB accelerated the etching rate and improved the texturing uniformity, while SDS enlarged the size of the formed structures and enhanced their ultraviolet light absorption efficiency. The prepared inverted pyramid structure reduced the reflectivity of the silicon wafer surface to 3.8 %, thus exhibiting efficient light-trapping capabilities. The etching evolution under various TBAB concentrations and different HF/H₂O₂ ratios was studied by characterizing the surface contact angle and copper deposition morphology. The results indicated that electrostatic attraction between TBAB and dangling bonds on the silicon wafer surface enhanced material transfer at the reaction interface and changed the electron distribution around dangling bonds, thus facilitating the catalytic metal attack on these bonds. The copper ion reactivity was decreased due to complexation between the dissociated alkyl sulfate ions of SDS and copper ions, which favored the deposition of larger copper nanoparticles during etching, thereby increasing the size of structures. This research offers valuable insights to enable the large-scale applications of Cu-ACE.

蚀刻不均匀和制造效率低阻碍了铜辅助化学蚀刻（Cu-ACE）在硅晶片表面纹理捕光结构方面的大规模应用。为解决这一问题，我们在 Cu-ACE 系统中引入了由四丁基溴化铵（TBAB）和十二烷基硫酸钠（SDS）组成的复合添加剂。结果表明，TBAB 加快了蚀刻速度并改善了纹理的均匀性，而 SDS 则扩大了所形成结构的尺寸并提高了其紫外线吸收效率。制备的倒金字塔结构将硅晶片表面的反射率降低到 3.8%，从而表现出高效的光捕获能力。通过表征表面接触角和铜沉积形态，研究了不同 TBAB 浓度和不同 HF/H2O2 比率下的蚀刻演化过程。结果表明，TBAB 与硅片表面悬挂键之间的静电吸引增强了反应界面上的物质转移，并改变了悬挂键周围的电子分布，从而促进了对这些键的催化金属攻击。由于 SDS 中解离的硫酸烷基离子与铜离子之间的络合作用，铜离子的反应活性降低，这有利于在蚀刻过程中沉积更大的纳米铜粒子，从而增大结构的尺寸。这项研究为 Cu-ACE 的大规模应用提供了宝贵的启示。

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引用次数: 0

Circuit modeling and analysis of hysteresis effect of perovskite photovoltaic cells 光伏电池磁滞效应的电路建模与分析

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-23 DOI: 10.1016/j.solmat.2024.113182

Shengxue Tang , Jinjing Yan , Li Chen , Wenyu Zhang , Liqiang Tan

Perovskite solar cells are an important development direction for future solar photovoltaic technology, with advantages such as low cost and high efficiency. However, they commonly suffer from hysteresis effects, which severely impacts the efficiency and lifespan of the cells. This paper analyzes the mechanism of hysteresis effects and the characteristics of the J-V curve of the cells. From a circuit perspective, this paper proposes a circuit modeling method for the J-V characteristics of hysteresis effects in perovskite photovoltaic cells. By utilizing the dynamic properties of nonlinear capacitors, the hysteresis model of perovskite photovoltaic cells is constructed, and the general expression of the model is derived. This model can simulate common hysteresis curves of different perovskite photovoltaic cells under various conditions. Simulation analysis of parameters' effects on hysteresis effects is conducted using the model. Experimental validation confirms that the circuit model accurately replicates the hysteresis effects observed in individual cells. By finely adjusting parameters, the model can efficiently generate a wide array of hysteresis effects, offering exceptional precision and versatility. This capability facilitates the precise simulation of hysteresis phenomena observed in perovskite photovoltaic cells.

过氧化物太阳能电池具有低成本、高效率等优点，是未来太阳能光伏技术的重要发展方向。然而，它们普遍存在滞后效应，严重影响了电池的效率和寿命。本文分析了滞后效应的机理和电池的 J-V 曲线特性。从电路的角度，本文提出了一种针对包晶光伏电池磁滞效应 J-V 特性的电路建模方法。利用非线性电容器的动态特性，构建了光伏电池的磁滞模型，并推导出模型的一般表达式。该模型可模拟不同条件下不同殒石光伏电池的常见磁滞曲线。利用该模型对参数对磁滞效应的影响进行了仿真分析。实验验证证实，电路模型准确复制了在单个电池中观察到的磁滞效应。通过微调参数，该模型可以有效地产生各种磁滞效应，具有极高的精度和多功能性。这种能力有助于精确模拟在包晶光伏电池中观察到的磁滞现象。

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引用次数: 0

Nitrogen-doped carbon quantum dots enable efficient photothermal conversion for direct absorption solar collectors 掺氮碳量子点实现直接吸收太阳能集热器的高效光热转换

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-22 DOI: 10.1016/j.solmat.2024.113178

Yuxin Liu , Chuanshuai Dong , Chaohua Peng , Tao Zhang , Lizhi Zhang

Direct absorption solar collector (DASC) using nanofluids is an efficient way to utilize solar energy. The heat collection efficiency in DASC is constrained by the stability and optical absorption capacity of nanofluids. Carbon quantum dots (CQDs) nanofluids are used in DASC due to the excellent dispersion stability. However, the optical absorption range of current CQDs is primarily confined to the ultraviolet region, resulting in the visible and near-infrared regions of sunlight being underutilized. To solve this problem, this study synthesized novel N-doped carbon quantum dots (FPNCQDs) using ammonium bifluoride (NH₄F) and perylene derivatives. The addition of NH₄F and perylene derivatives during synthesis increased the sp² conjugated structure and the content of graphite N in FPNCQDs. The doping of N, especially graphite N, significantly reduces the band gap by injecting excess electrons into the unoccupied π∗ orbitals. The temperature of FPNCQDs/EG nanofluids increased from 24 °C to 65.7 °C within 60 min, demonstrating excellent photothermal conversion performance. What's more, the FPNCQDs/EG nanofluids achieved high stability with nearly consistent transmittance over a 14-day storage test. Finally, a theoretical model for the photothermal conversion process of the nanofluids was developed to investigate the effect to carbon quantum dots on the solar collection performance. The simulation results indicated that the FPNCQDs/EG nanofluids at 10 ppm demonstrated the highest solar collection efficiency considering both photothermal conversion and heat loss from the surface. The novel FPNCQDs/EG nanofluid will be a promising photothermal fluids in direct absorption solar collector.

使用纳米流体的直接吸收太阳能集热器（DASC）是一种高效利用太阳能的方法。DASC的集热效率受到纳米流体稳定性和光吸收能力的制约。碳量子点（CQDs）纳米流体具有出色的分散稳定性，因此被用于 DASC。然而，目前 CQDs 的光吸收范围主要局限于紫外线区域，导致太阳光的可见光和近红外区域未得到充分利用。为解决这一问题，本研究利用氟化氢铵（NH4F）和过烯衍生物合成了新型 N 掺杂碳量子点（FPNCQDs）。在合成过程中加入 NH4F 和过二甲苯衍生物增加了 FPNCQDs 的 sp2 共轭结构和石墨 N 的含量。N 的掺杂，尤其是石墨 N 的掺杂，通过向未被占用的 π∗ 轨道注入过量电子而显著降低了带隙。在 60 分钟内，FPNCQDs/EG 纳米流体的温度从 24 ℃ 升至 65.7 ℃，显示出卓越的光热转换性能。此外，FPNCQDs/EG 纳米流体还具有很高的稳定性，在 14 天的储存测试中透射率几乎保持一致。最后，建立了纳米流体光热转换过程的理论模型，以研究碳量子点对太阳能收集性能的影响。模拟结果表明，考虑到光热转换和表面热损失，10 ppm 的 FPNCQDs/EG 纳米流体的太阳能收集效率最高。新型 FPNCQDs/EG 纳米流体将成为直接吸收太阳能集热器中一种前景广阔的光热流体。

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引用次数: 0

All-in-one electrochromic device from viologen-based Cu-MOF and photocurable eutectogel 由紫胶基 Cu-MOF 和光固化共晶凝胶制成的一体化电致变色装置

IF 6.3 2区材料科学 Q2 ENERGY & FUELS

Solar Energy Materials and Solar Cells

Pub Date : 2024-09-21 DOI: 10.1016/j.solmat.2024.113179

Le Huy Thai , Le Thi Thanh Nhi , Nguyen Minh Hiep , Dinh Thanh Khan , Trinh Ngoc Dat , Le Vu Truong Son , Truong Quang Trung , Le Hoang Sinh

A novel all-in-one electrochromic device from viologen-based Cu-MOF was demonstrated successfully for the first time. The viologen-based Cu-MOF was dispersed in a photochemical eutectic solvent and directly used as an electrochromic material with the outstanding advantage of good modulation ability in a wide range of visible light. The electrochromic device's (ECD) color changed from transparent and light lime green to blue during the change of potential from 0 V to −3.5 V. The bistability of the ECD was demonstrated by the transmittance degradation of less than 10 % over 1.79 h when the power was turned off. This showed that the ECD could maintain its optical state long without a continuous power supply.

首次成功展示了一种新型的一体化电致变色装置，其材料为基于病毒的 Cu-MOF。将紫胶基 Cu-MOF 分散在光化学共晶溶剂中，直接用作电致变色材料，具有在宽范围可见光下具有良好调制能力的突出优点。在电位从 0 V 到 -3.5 V 的变化过程中，电致变色器件（ECD）的颜色从透明的淡绿变为蓝色。在关闭电源的 1.79 小时内，ECD 的透光率衰减不到 10%，这证明了 ECD 的双稳态性。这表明，ECD 可以在没有持续供电的情况下长时间保持其光学状态。

引用次数: 0