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学者姓名：邓辉
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Abstract ：
High performances of Cu2ZnSn(S,Se)4 (CZTSSe) solar cells are heavily influenced by the quality of heterojunctions. Herein, an oxygen (O) doping of CZTSSe/CdS heterojunction is performed to suppress the formation of the defects by an ultraviolet ozone (UV-O3) treatment for the efficient flexible CZTSSe solar cells. The introduction of O reduces the non-radiative recombination and increases the carrier concentration of the CdS films. Furthermore, the defect density of the CdS film has been reduced from 8.24 x 1016 to 2.91 x 1016 cm-3 by the O-doping. The results indicate that the electron transport is effectively promoted due to the decreased conduction band offset (CBO) at the heterojunction interface. As a result, the champion flexible CZTSSe solar cell achieves a power conversion efficiency (PCE) of 11.21%, with a significantly improved short circuit current density. The study for improving the CZTSSe/CdS heterojunction through O-doping treatment provides a new insight for enhancing the PCE of the flexible CZTSSe solar cells. (c) 2025 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Keyword ：
Flexible CZTSSe solar cells Flexible CZTSSe solar cells O -doping O -doping Sulfur vacancy defects passivation Sulfur vacancy defects passivation UV-O 3 treatment UV-O 3 treatment
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| GB/T 7714 | Zhang, Yuheng , Wang, Weihuang , Sun, Quanzhen et al. Flexible CZTSSe solar cells with 11.21% efficiency enabled by O-doped CZTSSe/CdS heterojunction [J]. | JOURNAL OF ENERGY CHEMISTRY , 2025 , 105 : 806-813 . |
| MLA | Zhang, Yuheng et al. "Flexible CZTSSe solar cells with 11.21% efficiency enabled by O-doped CZTSSe/CdS heterojunction" . | JOURNAL OF ENERGY CHEMISTRY 105 (2025) : 806-813 . |
| APA | Zhang, Yuheng , Wang, Weihuang , Sun, Quanzhen , Xie, Weihao , Li, Yifan , Su, Zhenyi et al. Flexible CZTSSe solar cells with 11.21% efficiency enabled by O-doped CZTSSe/CdS heterojunction . | JOURNAL OF ENERGY CHEMISTRY , 2025 , 105 , 806-813 . |
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2D perovskite materials are ideal candidates for indoor photovoltaic (IPV) applications due to their tunable bandgap, high absorption coefficients, and enhanced stability. However, attaining uniform crystallization and overcoming low carrier mobility remain key challenges for 2D perovskites, limiting their overall performance. In this study, a 2D perovskite light-absorbing layer is constructed using a Dion-Jacobson (DJ)-phase EDA(FA)(4)Pb5I16 (n = 5) and introduced butylammonium iodide (BAI) for interface modification, thereby creating a novel DJ/Ruddlesden-Popper (RP) dual 2D perovskite heterostructure. By adjusting the thickness of the BAI-based perovskite layer, the relationship between interfacial defect states and carrier mobility is investigated under varying indoor light intensities. The results indicate that, by achieving a balance between interfacial defect passivation and carrier transport, the optimized 2D perovskite device reaches a power conversion efficiency (PCE) of 30.30% and an open-circuit voltage (V-OC) of 936 mV under 1000 lux (3000 K LED). 2D-DJ/RP perovskite IPV exhibits a twentyfold increase in T-90 lifetime compared to 3D perovskite devices. It is the first time to systematically study 2D perovskites in IPV applications, demonstrating that rationally designed and optimized 2D perovskites hold significant potential for fabricating high-performance indoor PSCs.
Keyword ：
2D perovskite solar cells 2D perovskite solar cells carrier transport carrier transport defect passivation defect passivation dual-phase 2D perovskite heterostructures dual-phase 2D perovskite heterostructures indoor photovoltaic indoor photovoltaic
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| GB/T 7714 | Wang, Renjie , Wu, Jionghua , Zheng, Qiao et al. Stable and Efficient Indoor Photovoltaics Through Novel Dual-Phase 2D Perovskite Heterostructures [J]. | ADVANCED MATERIALS , 2025 , 37 (18) . |
| MLA | Wang, Renjie et al. "Stable and Efficient Indoor Photovoltaics Through Novel Dual-Phase 2D Perovskite Heterostructures" . | ADVANCED MATERIALS 37 . 18 (2025) . |
| APA | Wang, Renjie , Wu, Jionghua , Zheng, Qiao , Deng, Hui , Wang, Weihuang , Chen, Jing et al. Stable and Efficient Indoor Photovoltaics Through Novel Dual-Phase 2D Perovskite Heterostructures . | ADVANCED MATERIALS , 2025 , 37 (18) . |
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Zinc oxide (ZnO) is used as an electron transport layer (ETL) in inverted organic solar cells (IOSCs) owing to its excellent performance, such as good light transmission and high conductivity, while its surface defects and photocatalytic properties limit the development of IOSCs. Herein, we apply an antioxidant, syringic acid (SA), to modify the surface of ZnO film, which observably improve the efficiency and stability of IOSCs. It is found that SA can effectively passivate the surface defects of ZnO and optimize surface morphology, as well as reduce the work function (WF) of ZnO resulting in an improvement of the charge transport of IOSCs. The power conversion efficiency (PCE) of PM6:Y6-based IOSCs is increased from 16.19 % to 18.18 %, it is the highest PCE values of the single-junction IOSCs based on PM6:Y6 system as reported. Meanwhile, the photostability of the device is markedly improved due to SA could suppress the photocatalytic of ZnO under the ultraviolet aging.
Keyword ：
Photostability' Inverted organic solar cells Photostability' Inverted organic solar cells Surface defects Surface defects Syringic acid Syringic acid Zinc oxide Zinc oxide
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| GB/T 7714 | Zheng, Qiao , Guo, Zhaohuang , Zhuang, Jinyong et al. 18.18 % Efficiency of organic solar cells based on PM6:Y6 with Syringic acid modified ZnO [J]. | SURFACES AND INTERFACES , 2025 , 65 . |
| MLA | Zheng, Qiao et al. "18.18 % Efficiency of organic solar cells based on PM6:Y6 with Syringic acid modified ZnO" . | SURFACES AND INTERFACES 65 (2025) . |
| APA | Zheng, Qiao , Guo, Zhaohuang , Zhuang, Jinyong , Zhou, Ziqi , Wu, Jionghua , Deng, Hui et al. 18.18 % Efficiency of organic solar cells based on PM6:Y6 with Syringic acid modified ZnO . | SURFACES AND INTERFACES , 2025 , 65 . |
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The optimization of the back interface is an important means of improving the power conversion efficiency (PCE) of Cu2ZnSn(S,Se)4 (CZTSSe) solar cells. Here, a CuO sacrificial layer is introduced into the Mo/CZTSSe back interface to improve device efficiency. The insertion of the CuO sacrificial layer inhibits the formation of Sn(S,Se)2 secondary phases in the CZTSSe film. Meanwhile, the interfacial trap state (N IT) is reduced by about 22%. Furthermore, the 75 nm CuO sacrificial layer can reduce the thickness of the MoSe2 layer, leading to a 33.18 meV reduction in the back interfacial barrier. This design enhances the back interfacial transport characteristics and suppresses defects. Finally, the flexible CZTSSe solar cell achieve the efficiency of 10.57%.
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| GB/T 7714 | Su, Zhenyi , Xie, Weihao , Sun, Quanzhen et al. Overcoming Back Interfacial Barrier Improves Flexible Cu2ZnSn(S,Se)4 Solar Cell Efficiency via CuO Sacrificial Layers [J]. | ACS MATERIALS LETTERS , 2025 , 7 (4) : 1329-1335 . |
| MLA | Su, Zhenyi et al. "Overcoming Back Interfacial Barrier Improves Flexible Cu2ZnSn(S,Se)4 Solar Cell Efficiency via CuO Sacrificial Layers" . | ACS MATERIALS LETTERS 7 . 4 (2025) : 1329-1335 . |
| APA | Su, Zhenyi , Xie, Weihao , Sun, Quanzhen , Li, Yifan , Zhong, Zhipan , Wang, Weihuang et al. Overcoming Back Interfacial Barrier Improves Flexible Cu2ZnSn(S,Se)4 Solar Cell Efficiency via CuO Sacrificial Layers . | ACS MATERIALS LETTERS , 2025 , 7 (4) , 1329-1335 . |
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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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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.
Keyword ：
2D/3d perovskite heterostructure 2D/3d perovskite heterostructure Defect passivation Defect passivation Ion migration Ion migration Perovskite solar cells Perovskite solar cells Stability Stability
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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 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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Antimony selenosulfide (Sb-2(S,Se)(3)) solar cells have achieved an efficiency of over 10.0%. However, the uncontrollable hydrothermal process makes preparing high-quality Sb-2(S,Se)(3) thin films a bottleneck for efficient Sb-2(S,Se)(3) solar cell. To address this problem, triethanolamine (TEA) additive is innovatively utilized to regulate the reaction kinetic process of Sb-2(S,Se)(3) thin films in this work. The results show that TEA chelator can realize the time-domain control of the reaction process, optimizing the Se/(S+Se) elemental distribution of Sb-2(S,Se)(3) thin film and shrinking the bandgap offset of Sb-2(S,Se)(3) thin film. Meanwhile, the (021) and (061) crystal orientation of Sb-2(S,Se)(3) thin film are enhanced and the harmful V-Se1 defects in Sb-2(S,Se)(3) solar cells are passivated. Interestingly, a uniform back surface gradient for Sb-2(S,Se)(3) thin film is formed to reduce the minority carrier recombination at the back contact, increase the photocurrent and decrease the diode current of Sb-2(S,Se)(3) solar cells. Finally, the J(sc) and FF of Sb-2(S,Se)(3) solar cells are significantly improved by 8.6% and 5.5% respectively, and the open-circuit voltage deficit of the device is reduced by 44 mV, which leads to an efficiency of 9.94% which is the highest values of Sb-2(S,Se)(3) solar cells by sodium selenosulfate system.
Keyword ：
additive additive hydrothermal deposition hydrothermal deposition reaction kinetic reaction kinetic Sb-2(S, Se)(3) solar cells Sb-2(S, Se)(3) solar cells sodium selenosulfate sodium selenosulfate
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| GB/T 7714 | Zhu, Qiqiang , Wang, Weihuang , Chen, Zhirong et al. Fabricating High-Efficiency Sb2(S,Se)3 Solar Cells by Novel Additive-Assisted Longitudinal Component Engineering [J]. | SMALL , 2024 . |
| MLA | Zhu, Qiqiang et al. "Fabricating High-Efficiency Sb2(S,Se)3 Solar Cells by Novel Additive-Assisted Longitudinal Component Engineering" . | SMALL (2024) . |
| APA | Zhu, Qiqiang , Wang, Weihuang , Chen, Zhirong , Cao, Zixiu , Wang, Weiyu , Feng, Xinxin et al. Fabricating High-Efficiency Sb2(S,Se)3 Solar Cells by Novel Additive-Assisted Longitudinal Component Engineering . | SMALL , 2024 . |
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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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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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