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学者姓名：邓辉
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Abstract ：
Perovskite solar cells have gradually become the most attractive alternative for next-generation photovoltaic devices due to their excellent photovoltaic conversion efficiencies and low manufacturing costs. Defect engineering is an essential topic for improving the performance of perovskite devices. In this study, we utilize a bifunctional alkylamine sulfonate to modify the perovskite interfaces. The TsO- of sulfonates coordinates with Pb2+, while -NH2 of alkylamine forms hydrogen bonds with iodine, which reduces charge recombination and improves energy level arrangement. The molecular size and the alkylamine's dielectric constant significantly influence the interface modification performance. For the champion device with BATsO treatment, there is an enhancement in both the fill factor and the open-circuit voltage, resulting in a power conversion efficiency (PCE) of 23.53%. After 400 h of working condition, the device maintains roughly 90.40% of its initial efficiency. Therefore, this study postulates that modifying bifunctional alkylamine sulfonates could effectively enhance the PSC's performance.
Keyword ：
Double -functional additive Double -functional additive Passivation defects Passivation defects Perovskite solar cells Perovskite solar cells
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| GB/T 7714 | Huang, Shaobiao , Wang, Renjie , Zheng, Qiao et al. Optimal interfacial engineering with different bifunctional alkylamine sulfonates for efficient perovskite solar cells [J]. | SOLAR ENERGY MATERIALS AND SOLAR CELLS , 2024 , 270 . |
| MLA | Huang, Shaobiao et al. "Optimal interfacial engineering with different bifunctional alkylamine sulfonates for efficient perovskite solar cells" . | SOLAR ENERGY MATERIALS AND SOLAR CELLS 270 (2024) . |
| APA | Huang, Shaobiao , Wang, Renjie , Zheng, Qiao , Deng, Hui , Zhang, Caixia , Wang, Weihuang et al. Optimal interfacial engineering with different bifunctional alkylamine sulfonates for efficient perovskite solar cells . | SOLAR ENERGY MATERIALS AND SOLAR CELLS , 2024 , 270 . |
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Abstract ：
The high photovoltaic conversion efficiency (PCE) of ternary organic solar cells (OSCs) based on PTB7-Th, PC71BM and IEICO-4F material is obtained, the short-circuit current density (J SC), fill factor (FF), and open-circuit voltage is 25.90 mA cm-2, 73.20% and 0.71 V, respectively. PCE is as high as 13.53%. It is the highest PCE of ternary OSCs based on PTB7-Th, PC71BM and IEICO-4F materials for all we know. The narrow bandgap material of IEICO-4F is deposited on PTB7-Th:PC71BM bulk heterojunction (BHJ) by layer-by-layer process. We constructed the dual bandgap active layer both BHJ and pseudo-planar heterojunction (P-PHJ), it could be defined as ternary BHJ/P-PHJ of OSCs. This type of OSCs is not only the complementary bandgap material of the active layer, but also increasing the donor/acceptor (D/A) interface. The excitons generation and collection of the device are increased leading a higher J SC and FF. The semitransparent OSCs (ST-OSCs) is prepared by varying the thickness of Ag electrode and PCE can reach 9.70%, and the average visible light transmittance and light use efficiency of ST-OSCs are improved effectively.
Keyword ：
bulk heterojunction bulk heterojunction donor/acceptor interface donor/acceptor interface dual bandgap active layer dual bandgap active layer layer-by-layer layer-by-layer pseudo-planar heterojunction pseudo-planar heterojunction ternary organic solar cells ternary organic solar cells
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| GB/T 7714 | Zheng, Qiao , Zhou, Hui , Guo, Zhaohuang et al. Improved performance of ternary organic solar cells based on both bulk and pseudo-planar heterojunction active layer [J]. | JOURNAL OF PHYSICS D-APPLIED PHYSICS , 2024 , 57 (31) . |
| MLA | Zheng, Qiao et al. "Improved performance of ternary organic solar cells based on both bulk and pseudo-planar heterojunction active layer" . | JOURNAL OF PHYSICS D-APPLIED PHYSICS 57 . 31 (2024) . |
| APA | Zheng, Qiao , Zhou, Hui , Guo, Zhaohuang , Zhuang, Jinyong , Deng, Hui , Wu, Jionghua et al. Improved performance of ternary organic solar cells based on both bulk and pseudo-planar heterojunction active layer . | JOURNAL OF PHYSICS D-APPLIED PHYSICS , 2024 , 57 (31) . |
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Abstract ：
Efficient ternary organic solar cells were achieved by utilizing an ultra-narrow bandgap material, IEICO-4 F, mixed with the fullerene material PC71BM as the acceptor and PTB7-Th polymer as the donor. The different weights of IEICO-4 F were dropped into the active layer to adjust the ratio of acceptor and donor, optimizing the performance of the cells. The results showed the ternary organic solar cells with 10wt% IEICO-4 F could obtain a higher short-circuit current density resulting in the power conversion efficiency (PCE) up to 9.56%. MoO3/Ag/MoO3 as the transparent electrodes of the semitransparent organic solar cell (ST-OSCs) were prepared. The different thicknesses of Ag impacts on the performance of the ST-OSCs were investigated. The PCE of the ternary ST-OSCs was increased to 7.34% and the average visible light transmittance (AVT) was increased to 28.74% when Ag was 10 nm thickness. The ternary ST-OSCs presented both a good light transmittance and a high PCE. In addition, the light utilization efficiency of the ST-OSCs was increased to 2.1%, and the color reproduction index was improved too. The PCE and AVT of the ST-OSCs could improve simultaneously due to the appropriate ratio of the acceptor and donor as well as the optimized transparent electrodes.
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| GB/T 7714 | Zheng, Qiao , Zhou, Hui , Du, Shunli et al. Efficiency and average visible light transmittance improved simultaneously of the semitransparent organic solar cells [J]. | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2024 , 35 (6) . |
| MLA | Zheng, Qiao et al. "Efficiency and average visible light transmittance improved simultaneously of the semitransparent organic solar cells" . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 35 . 6 (2024) . |
| APA | Zheng, Qiao , Zhou, Hui , Du, Shunli , Chen, Pengsen , Huang, Jingang , Deng, Hui et al. Efficiency and average visible light transmittance improved simultaneously of the semitransparent organic solar cells . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2024 , 35 (6) . |
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Constructing 2D/3D perovskite heterostructures with organic molecules is key to improving the power conversion efficiency (PCE) and stability of perovskite solar cells (PSCs). However, a comprehensive understanding of the inhibitory relationship between the 2D perovskite layer and ion migration at the interface is still lacking. In this study, we use different alkyl ammonium iodides to build 2D/3D perovskite heterostructures. The research results show that both the chain length of alkyl and amino group count in alkyl ammonium iodide can significantly affect the crystal structure orientation of the 2D perovskite layer. A Dion-Jacobson (DJ) 2D/3D structure treated with ODADI shows superior defect passivation and carrier extraction, leading to PSCs with a 24.51 % PCE. Furthermore, the perovskite based on ODA cations eliminates the influence of Van der Waals interaction in perovskite based on BA or OA cations, which improves the stability of the lattice structure, and significantly inhibits ion migration. Therefore, after a maximum power point stability test of 1500 h, devices retain approximately 88 % of their initial PCE. This work offers fresh insights into optimizing interfaces in 2D/3D PSCs by selecting suitable organic molecules. © 2024
Keyword ：
Conversion efficiency Conversion efficiency Crystal orientation Crystal orientation Defects Defects Molecules Molecules Passivation Passivation Perovskite Perovskite Perovskite solar cells Perovskite solar cells Positive ions Positive ions Stability Stability Van der Waals forces Van der Waals forces
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| GB/T 7714 | Wang, Renjie , Li, Yiming , Zhu, Jingwei et al. A comparative study of alkylammonium halide interface modification for high efficiency and ion migration stability perovskite solar cells [J]. | Materials Today Physics , 2024 , 45 . |
| MLA | Wang, Renjie et al. "A comparative study of alkylammonium halide interface modification for high efficiency and ion migration stability perovskite solar cells" . | Materials Today Physics 45 (2024) . |
| APA | Wang, Renjie , Li, Yiming , Zhu, Jingwei , Zheng, Qiao , Deng, Hui , Zhang, Caixia et al. A comparative study of alkylammonium halide interface modification for high efficiency and ion migration stability perovskite solar cells . | Materials Today Physics , 2024 , 45 . |
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Perovskite solar cells (PSCs) efficiency has recently achieved significant advancements, surpassing the 26% threshold. Excessive PbI2, often used in high-efficiency PSCs, will also cause stability or defect problems. To address these challenges, we introduce anionic and cationic bifunctional additives to passivate PSCs synergistically. Phenylethylamine trifluoroacetate (PEATFA) is utilized as an additive to passivate the perovskite film. The PEA(+) cation facilitates the formation of two-dimensional perovskite while TFA(-) anion passivate the uncoordinated Pb2+ ions and iodine vacancies, enhancing perovskite crystal quality without excess PbI2. Furthermore, PEATFA modification optimizes the energy level matching between the perovskite and charge transfer layers, thereby enhancing charge transfer and extraction capabilities. Finally, the device achieves an impressive power conversion efficiency of 24.05% while exhibiting minimal hysteresis and good stability.
Keyword ：
double-functional additive double-functional additive passivation defects passivation defects perovskite solar cells perovskite solar cells phenethylamine trifluoroacetate phenethylamine trifluoroacetate
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| GB/T 7714 | Wu, Jionghua , Hang, Chenwang , Wang, Renjie et al. Double-functional additive strategy for efficient perovskite solar cells [J]. | SCIENCE CHINA-MATERIALS , 2024 , 67 (8) : 2628-2636 . |
| MLA | Wu, Jionghua et al. "Double-functional additive strategy for efficient perovskite solar cells" . | SCIENCE CHINA-MATERIALS 67 . 8 (2024) : 2628-2636 . |
| APA | Wu, Jionghua , Hang, Chenwang , Wang, Renjie , Zheng, Qiao , Deng, Hui , Zhang, Caixia et al. Double-functional additive strategy for efficient perovskite solar cells . | SCIENCE CHINA-MATERIALS , 2024 , 67 (8) , 2628-2636 . |
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光电探测器能够利用自身结构实现自供电,广泛应用于环境监测、光通信和航空航天等领域,由于硫化锑(Sb_2S_3)无毒、储量丰富、在可见光范围内具有良好的吸光能力,完美符合制备光电探测器的材料要求。因此,我们采用低成本的水热法合成TiO_2纳米棒阵列(NRs),通过快速热蒸发法(RTE)制备Sb_2S_3薄膜。水热法合成的TiO_2-NRs可以增加器件的并联电阻来抑制漏电流。并且可以调控RTE法制备的Sb_2S_3薄膜取向,进而减少链间电荷跳变和复合,有利于光生载流子输运,增强光电响应速度。制备的器件结构为FTO/TiO_2-NRs/Sb_2S_3/Au,可在无外加偏压情况下表现出良好的光电性能,在波长为625 nm、光功率密度为400μW/cm~2的光照条件下,器件的响应度为0.6 A/W,响应时间接近1μs。该Sb_2S_3光伏型探测器将会为光通信提供器件基础。
Keyword ：
光伏型光电探测器 光伏型光电探测器 硫化锑 硫化锑 纳米棒阵列 纳米棒阵列
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| GB/T 7714 | 康裕滨 , 邓辉 , 程树英 . 基于二氧化钛纳米棒阵列的硫化锑光伏型光电探测器 [C] //第十一届新型太阳能材料科学与技术学术研讨会 . 2024 . |
| MLA | 康裕滨 et al. "基于二氧化钛纳米棒阵列的硫化锑光伏型光电探测器" 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
| APA | 康裕滨 , 邓辉 , 程树英 . 基于二氧化钛纳米棒阵列的硫化锑光伏型光电探测器 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
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基于水热法的硫化锑(Sb_3S_3)太阳能电池性能具有较大前景,利用掺杂剂、硒化、硫化等方法可以实现硫化锑太阳能电池的进一步提升。退火是水热硫化锑必不可少的过程,利用这一过程实现无定形薄膜到结晶态的转变。目前,水热法制备的硫化锑仍面临着体相缺陷制约其效率的进步,而如何提升薄膜体相结晶态还是一个难题,有关这一方面的工作还需要更多的研究。我们针对薄膜的退火进行了一些研究,研究空气、手套箱热台及Ar管式炉下的退火,对比不同退火工艺下的薄膜晶态转变及晶粒的融合生长过程,进一步分析薄膜内部缺陷的影响因素。最后,基于Ar管式炉退火的Sb_2S_3获得了最好的薄膜质量,得益于其结晶态的增强及取向的调控,优化后的器件实现了PCE 7.53%,这位于硫化锑太阳能电池的第一梯队。该结果为硫化锑缺陷态的形成过程提供了研究思路,也将促进高效Sb_2S_3太阳能电池的快速发展。
Keyword ：
水热沉积 水热沉积 硫化锑薄膜 硫化锑薄膜 退火 退火
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| GB/T 7714 | 冯信信 , 邓辉 , 程树英 . 水热法Sb_2S_3太阳能电池的退火工艺研究 [C] //第十一届新型太阳能材料科学与技术学术研讨会 . 2024 . |
| MLA | 冯信信 et al. "水热法Sb_2S_3太阳能电池的退火工艺研究" 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
| APA | 冯信信 , 邓辉 , 程树英 . 水热法Sb_2S_3太阳能电池的退火工艺研究 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
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物联网行业的发展带动室内能源消耗的提升,光伏电池在室内环境应用的需求也逐步增加。不同于传统户外太阳光照射条件,室内光源针对于人眼设计,主要波长分布在可见光范围,理论计算所得的最佳带隙为1.9 eV~([1]);同时室内环境的光照强度相较于室外弱了2-3个数量级,两者较大的光照条件差异使得老牌的诸如硅基等光伏电池在室内环境的表现并不理想。硫化锑薄膜电池的带隙为1.7 eV,与室内光伏的最佳带隙较为匹配,同时拥有较大的吸收系数(10~(5 )cm~(-1))~([2]),针对于弱光环境实现一个良好的吸光效果,是一种可应用于室内光伏的优秀材料。在常用的室内照明用台灯的照射下,基础的硫化锑薄膜电池(FTO/TiO_2/Sb_2S_3/Au)实现了1000 lux照度下超过10%的光电转换效率(AM 1.5G下5%)。对于室内光照的特定环境,再针对硫化锑薄膜电池进行带隙提升、界面改性等处理,有望实现在室内弱光环境下的更高光电转换效率~([3])。
Keyword ：
室内光伏 室内光伏 带隙匹配 带隙匹配 开压改善 开压改善 硫化锑薄膜电池 硫化锑薄膜电池
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| GB/T 7714 | 吴可非 , 邓辉 , 程树英 . 全无机硫化锑薄膜室内光伏电池 [C] //第十一届新型太阳能材料科学与技术学术研讨会 . 2024 . |
| MLA | 吴可非 et al. "全无机硫化锑薄膜室内光伏电池" 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
| APA | 吴可非 , 邓辉 , 程树英 . 全无机硫化锑薄膜室内光伏电池 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
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光电探测器是光通信系统中重要器件,现在以硅基为主,其蓝绿波段光的吸光系数较低,且成本高昂。硫化锑(Sb_2S_3)是一种二元化合物,且具有物相单一、无毒环保和价格低廉等,吸光吸收较大,可实现可见光探测应用于光通信领域。构建自供电的Sb_2S_3光伏探测器PDMS/glass/FTO/TiO_2/Sb_2S_3/Au。在内部实现吸收层厚度与耗尽区宽度匹配,增强电荷传输;在外部设计金字塔状的聚二甲基硅氧烷(PDMS)陷光膜,增强光吸收能力。最终,器件实现在530 nm波长下1μW/cm~2光强下响应度3.41A/W和比探测率2.84×10~(13) Jones。Sb_2S_3光伏电池可实现光电信号检测,用于实现高效的光电转换和信号的高保真传输,在可见光通信系统中具有应用前景。通过SCAPS-1D软件模拟获得了结构的最佳厚度,优化后的器件具有高性能参数,探测器获得440kHz的带宽。此外,通过设计匹配的光检测电路,成功地将由此产生的Sb_2S_3光伏型探测器集成到可见光通信系统中,实现了语音的传输。
Keyword ：
光伏探测器 光伏探测器 光通信 光通信 硫化锑 硫化锑
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| GB/T 7714 | 邓辉 , 程树英 , 夏勇 . 面向光通信应用的硫化锑光伏器件 [C] //第十一届新型太阳能材料科学与技术学术研讨会 . 2024 . |
| MLA | 邓辉 et al. "面向光通信应用的硫化锑光伏器件" 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
| APA | 邓辉 , 程树英 , 夏勇 . 面向光通信应用的硫化锑光伏器件 第十一届新型太阳能材料科学与技术学术研讨会 . (2024) . |
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The severe carrier recombination at the CZTSSe/CdS heterojunction interface and high toxicity of Cd limit the further development of flexible Cu2ZnSn(S, Se)4 (CZTSSe) solar cells. Here, we apply a suitable and environmentally friendly Zn1-xSnxO (ZTO) buffer layer to suppress the interface recombination in the flexible solar cell for the first time. The ZTO buffer layers with good qualities have been successfully obtained by varying the Sn/(Zn + Sn) value. The solar cell has obtained an efficiency of 8.7%, which is the highest efficiency reported for a Cd-free flexible CZTSSe solar cell so far. The optimal device has more ideal diode parameter values, indicating that the interface quality is significantly improved. The VOC-T characteristic demonstrates that the interfacial recombination of flexible ZTO devices has been greatly reduced. The theoretical simulations show that the flexible CZTSSe devices with optimal ZTO layers achieve good band alignment to reduce the interface recombination, elucidating the intrinsic link between the band structure and the device performance. This investigation provides a solution to achieve environmentally friendly and efficient flexible CZTSSe solar cells by designing the interface engineering of the absorber/buffer heterojunction in solar cells.
Keyword ：
CZTSSe CZTSSe flexible solar cell flexible solar cell interface engineering interface engineering ZTO buffer layer ZTO buffer layer
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| GB/T 7714 | Lin, Beibei , Sun, Quanzhen , Zhang, Caixia et al. Efficient Cd-Free Flexible CZTSSe Solar Cells with Quality Interfaces by Using the Zn1-XSnXO Buffer Layer br [J]. | ACS APPLIED ENERGY MATERIALS , 2023 . |
| MLA | Lin, Beibei et al. "Efficient Cd-Free Flexible CZTSSe Solar Cells with Quality Interfaces by Using the Zn1-XSnXO Buffer Layer br" . | ACS APPLIED ENERGY MATERIALS (2023) . |
| APA | Lin, Beibei , Sun, Quanzhen , Zhang, Caixia , Deng, Hui , Li, Yaling , Xie, Weihao et al. Efficient Cd-Free Flexible CZTSSe Solar Cells with Quality Interfaces by Using the Zn1-XSnXO Buffer Layer br . | ACS APPLIED ENERGY MATERIALS , 2023 . |
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