Article
Chemistry, Physical
Difei Zhang, Wenkai Zhong, Lei Ying, Baobing Fan, Meijing Li, Ziqi Gan, Zhaomiyi Zeng, Dongcheng Chen, Ning Li, Fei Huang, Yong Cao
Summary: Research demonstrates that utilizing quasi-orthogonal solvents in traditional planar heterojunction structures can overcome limitations of nanoscale phase separation in bulk-heterojunction organic solar cells, leading to an improved power conversion efficiency of 14.2%. Additional experiments confirm the key factors in forming optimal nanoscale morphology.
Article
Chemistry, Multidisciplinary
Yun-Ming Sung, Cheng-Hsun-Tony Chang, Cheng-Si Tsao, Hua-Kai Lin, Hou-Chin Cha, Pei-Cheng Jiang, Tian-Cheng Liu, Kang-Wei Chang, Yu-Ching Huang, Jyh-Shen Tsay
Summary: In this study, the researchers used solution-processed s-MoO3 as a hole transport layer in PTB7:PC71BM polymer solar cells. The cells exhibited excellent stability and maintained their initial power conversion efficiency after thermal aging for at least 2200 hours. X-ray photoelectron spectroscopy analysis revealed the mechanism behind the formation of the robust s-MoO3 layer and how it prevented thermal degradation of the cells.
Article
Chemistry, Multidisciplinary
Jasurbek Gulomov, Oussama Accouche, Zaher Al Barakeh, Rayimjon Aliev, Irodakhon Gulomova, Bilel Neji
Summary: This study evaluated the physical properties of MoO3 metal oxide and explored its potential applications in optoelectronic devices. The results demonstrated that MoO3 can serve as an anti-reflection layer and an emitter layer for silicon-based solar cells. Additionally, it identified the optimal layer thickness combination for MoO3/Si heterojunction solar cells.
Article
Materials Science, Multidisciplinary
Yiming Bai, Rongkang Shi, Yinglong Bai, Fuzhi Wang, Jun Wang, Tasawar Hayat, Ahmed Alsaedi, Zhan'ao Tan
Summary: A facile synthesis method was used to prepare indium oxide and gallium oxide cathode buffer layers, achieving high photovoltaic conversion efficiency in organic solar cells. The different work functions of indium oxide and gallium oxide led to distinct performance in the devices.
SCIENCE CHINA-MATERIALS
(2021)
Article
Chemistry, Applied
Sabrina Aufar Salma, Rahmatia Fitri Binti Nasrun, Qurrotun Ayuni Khoirun Nisa, Dong Hwan Son, Joo Hyun Kim
Summary: In this study, small molecules based on PDI with amino N-oxide, dimethyldipropylenetriamino, and ethyl tosylate were used as the cathode buffer layer (CBL) in inverted type organic solar cells (OSCs). The thermal instability of PDIN-O, when used as the CBL, was addressed by introducing the side groups dimethyldipropylenetriamino and tosylate. The devices with PDIN-O, PDIN-N, and PDIN-OTs exhibited power conversion efficiencies (PCE) of 12.5%, 13.3%, and 14.2%, respectively. The ability to modulate the CBL in nonfullerene organic solar cells by introducing side groups to tune the work function at the cathode interface was demonstrated in this study. PDIN-OTs showed promise as a CBL material in inverted type devices and can be further explored by changing the counterion or side group.
Article
Chemistry, Multidisciplinary
Ling Hong, Huifeng Yao, Yong Cui, Pengqing Bi, Tao Zhang, Yongxin Cheng, Yunfei Zu, Jinzhao Qin, Runnan Yu, Ziyi Ge, Jianhui Hou
Summary: Establishing an ideal architecture with selective carrier transport and suppressed recombination is crucial for improving photovoltaic efficiency in organic solar cells (OSCs). By tailoring a hybrid planar/bulk structure, highly efficient OSCs with reduced energy losses were fabricated. The study highlights the potential of precisely regulating the structure of donor:acceptor heterojunction to further enhance the efficiencies of OSCs.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Physical
Yi Yang, Jingwen Wang, Yunfei Zu, Qing Liao, Shaoqing Zhang, Zhong Zheng, Bowei Xu, Jianhui Hou
Summary: An interlayer material based on a designed cross-linkable naphtha-lene diimide (NDI) derivative is developed for highly stable and hydrophobic organic solar cells (OSCs). By n-doping the crosslinked c-NDI:PCy2 film with a non-polar electron donor PCy2, a remarkably high conductivity of 6.51 x 10-3 S/m is achieved with a five-fold increase in doping density. The strong hydrophobicity of the c-NDI:PCy2 interlayer provides excellent water resistance, enabling the OSCs to maintain 70% of their initial efficiency after 1,000 hours in the dark or 4 hours under continuous illumination (100 mW/cm2). The power conversion efficiency of the OSCs reaches 17.7% using the c-NDI:PCy2 interlayer, which is the highest reported value for OSCs with an inverted device architecture.
Article
Optics
Daniel A. Fentahun, Alekha Tyagi, Kamal K. Kar
Summary: The study found that the power conversion efficiency of AZO/Cu2O-based heterojunction thin-film solar cells is enhanced by using a double buffer (ZnO/CdS) layer compared to a single buffer (CdS) layer. The optimized solar cell structure with double buffer layers showed better performance under illumination.
Article
Materials Science, Multidisciplinary
Jingqiao Guo, Bo Yu, Feng Zhu, Donghang Yan
Summary: High-mobility thin film transistors of p-6P/2,9-DPh-DNTT were demonstrated using different buffer layers, with F16CoPc achieving the highest reported mobility. The optimized device performance was attributed to reduced contact resistance and improved carrier injection. An OTFT array with high mobility and low VT was fabricated, proving the potential of 2,9-DPh-DNTT in large-area displays and sensor arrays.
ORGANIC ELECTRONICS
(2021)
Review
Chemistry, Multidisciplinary
Swati Bishnoi, Ram Datt, Sandeep Arya, Sonal Gupta, Ramashanker Gupta, Wing Chung Tsoi, Shailesh N. Sharma, Shashikant P. Patole, Vinay Gupta
Summary: This article provides a detailed insight into the efficient cathode buffer layers (CBLs) in conventional and inverted organic solar cells (OSCs). The CBL can improve the performance of the devices by reducing contact resistance and charge recombination, leading to efficient charge extraction and enhanced power conversion efficiency. The chemical composition, morphology, thickness, dopants, and deposition conditions of CBL and their effects on device performance are discussed. The best performing CBLs are summarized and their chemical structures are examined.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
H. Ftouhi, E. M. El-Menyawy, H. Lamkaouane, M. Diani, G. Louarn, J. C. Bernede, M. Addou, L. Cattin
Summary: This research investigated the influence of double HTL MoO3/CuI on the performance of PHJ-OPV, and found that using double HTL can significantly improve the efficiency of PHJ-OPV. This is because both MoO3 and CuI have positive effects on hole collection and the nucleation and growth of alpha-6T. Additionally, CuI leads to important structural changes in alpha-6T, improving light absorption, roughness, and hole mobility.
Article
Chemistry, Physical
Quanzhen Sun, Jianlong Tang, Caixia Zhang, Yaling Li, Weihao Xie, Hui Deng, Qiao Zheng, Jionghua Wu, Shuying Cheng
Summary: Flexible CZTSSe solar cells, which have abundant earth elements, high stability, and wide application prospects, have gained significant attention. However, the high toxicity of the Cd in the buffer layers poses environmental problems. In this study, a Cd-free flexible CZTSSe/ZnO solar cell was developed, and the influence of ZnO films on device performances was investigated. The removal of the CdS layer enhanced the light absorption capacity of flexible CZTSSe solar cells. The optimized thickness of the ZnO buffer layers and the appropriate annealing temperature of the CZTSSe/ZnO were found to be 100 nm and 200 C-?. Ultimately, the optimized device achieved an efficiency of 5.0%, which is the highest for flexible CZTSSe/ZnO solar cells. Systematic characterizations showed that the optimized flexible CZTSSe/ZnO solar cells exhibited quality heterojunction, low defect density, and better charge transfer capability. This work provides a new strategy for the development of environmentally friendly and low-cost flexible CZTSSe solar cells.
Article
Chemistry, Multidisciplinary
Ping Cai, Ling Ding, Ziming Chen, Dianhui Wang, Hongliang Peng, Changlai Yuan, Chaohao Hu, Lixian Sun, Yuriy N. Luponosov, Fei Huang, Qifan Xue
Summary: In this study, a tetrabutylammonium bromide functionalized MXene material is developed as a cathode buffer layer for perovskite solar cells (PVSCs). The functionalized MXene layer exhibits high electrical conductivity and reduced work function, leading to improved energy level alignment and enhanced charge extraction. Additionally, it effectively inhibits the migration of iodine ions and reduces charge recombination. As a result, the PVSC device with the functionalized MXene layer achieves a significantly improved power conversion efficiency of 21.65% and enhanced operational stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhijun Zou, Fen Li, Jing Fang, Mingxin Chen, Xiaoxiang Sun, Chang Li, Jiayou Tao, Gaohua Liao, Jianjun Zhang
Summary: The bilayer structure of ZnO/SnO2 CBL, prepared by the low-temperature UV-ozone sintering process, exhibits exceptional performance in organic solar cells with a power conversion efficiency of 10.56% and improved stability. This process has great application potential due to its low temperature and excellent transmittance.
Article
Electrochemistry
Junhui Shi, Yuanqiang Wang, Mengru Yang, Yanfang Gu, Wei An, Yong Men, Jingxia Yang, Yichuan Rui
Summary: In this study, n-type indium sulfide (In2S3) was used as a buffer layer to improve the performance of Sb2S3 thin film solar cells, resulting in higher power conversion efficiency. The optimized chemical bath deposition process enhanced the compactness and crystallinity of the thin films. This work provides a new insight into the use of non-toxic In2S3 as a buffer layer in Sb2S3 planar solar cells.
ELECTROCHIMICA ACTA
(2021)
