Article
Chemistry, Multidisciplinary
Wenhua Zhang, Xueping Zong, Ming Luo, Mengnan Hua, Lianjie Zhu, Mao Liang, Song Xue
Summary: The development of a binaphthyl-ether based polymer Z13 for i-PSCs demonstrated improved device performance, with good solubility and film forming properties contributing to superior morphology uniformity of deposited perovskite. Z13 also showed significantly optimized device thermal-durability compared to reference materials PTAA and Z5.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Energy & Fuels
Luqi Wang, Chao Wang, Jing Li, Cong Geng, Yanping Mo, Hanxiao Li, Tongle Bu, Jinhui Tong, Yi-Bing Cheng, Fuzhi Huang
Summary: Buried interface engineering was used to improve the hydrophobic PTAA surface for the scalable deposition of perovskite films in inverted PSCs. Introduction of an amphiphilic molecule on the PTAA surface enhanced the interface wettability, facilitated perovskite growth, and reduced nonradiative recombination. The champion devices achieved high power conversion efficiencies of 22.04% and 20.47% with excellent stability, maintaining over 70% of initial PCE after 1200 hours under continuous 1 sun illumination at 65 degrees C in a nitrogen environment.
Article
Chemistry, Multidisciplinary
Jiaonan Sun, Ke Ma, Zih-Yu Lin, Yuanhao Tang, Dharini Varadharajan, Alexander X. Chen, Harindi R. Atapattu, Yoon Ho Lee, Ke Chen, Bryan W. Boudouris, Kenneth R. Graham, Darren J. Lipomi, Jianguo Mei, Brett M. Savoie, Letian Dou
Summary: Polymer as a hole-transporting layer can enhance the stability of perovskite solar cells. By molecular side-chain engineering, a uniform 2D perovskite interlayer with conjugated ligands is successfully constructed, improving the interfacial adhesion. The PTAA-based solar cells with the thin and lateral extended 2D/3D heterostructure achieved a PCE of 23.7%, higher than the reference devices' 18%. Devices with the new ligands also exhibited superior thermal and moisture stability.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yogesh S. Tingare, Chaochin Su, Ja-Hon Lin, Yi-Chun Hsieh, Hong-Jia Lin, Ya-Chun Hsu, Meng-Che Li, Guan-Lin Chen, Kai-Wei Tseng, Yi-Hsuan Yang, Leeyih Wang, Hsinhan Tsai, Wanyi Nie, Wen-Ren Li
Summary: Interfaces and hole-transporting materials are crucial for the performance of perovskite solar cells. This study introduces a new class of benzimidazole-based small molecules as hole-transporting materials, enabling high-efficiency mixed-cation mixed-halide perovskite solar cells.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yogesh S. Tingare, Wan-Chun Wang, Hong Jia Lin, Chong Wei Wu, Ja-Hon Lin, Chaochin Su, Xiang-Ching Lin, Jia-Rong Zhang, Yi-Xuan Huang, Hsinhan Tsai, Wanyi Nie, Wen-Ren Li
Summary: In this study, two new dipolar polymers, WWC103 and WWC105, based on 2-(1,1-dicyanomethylene)rhodamine and 4-cynophenylacetonitrile acceptors, were synthesized and investigated for high-efficiency and stable perovskite solar cells. These materials, built on a heterocyclic frame, not only have different acceptors but also provide passivation effects and improve the morphology of the perovskite layer. The dopant-free solar cells based on these HTMs show high open-circuit voltage and good power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
XinYu Yu, Danpeng Gao, Zhen Li, Xianglang Sun, Bo Li, Zonglong Zhu, Zhong'an Li
Summary: The commercialization of perovskite solar cells (PVSCs) requires the development of green-solvent processable dopant-free hole transporting materials (HTMs). A simple and effective design strategy of constructing star-shaped D-A-D structure has been proposed. The resulting HTMs (BTP1-2) can be processed by green solvent 2-methylanisole (2MA) and show high hole mobility and defect passivation effects, achieving an impressive efficiency of 24.34% for 2MA-processed BTP1 based inverted PVSCs, the highest value for green-solvent processable HTMs so far.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Nanoscience & Nanotechnology
Qiaogan Liao, Yang Wang, Xiyu Yao, Mengyao Su, Bolin Li, Huiliang Sun, Jiachen Huang, Xugang Guo
Summary: In this study, a commercially available polymer P3CT was directly applied as an HTL in PSCs for the first time. Due to its dual functionality, P3CT can achieve a better quality perovskite film and P3CT-based PSCs show lower nonradiative recombination and high efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Isaac G. Sonsona, Manuel Carrera, Miriam Mas-Montoya, Rafael S. Sanchez, Patricio Serafini, Eva M. Barea, Ivan Mora-Sero, David Curiel
Summary: Interfaces between photoactive perovskite layer and selective contacts are crucial for the performance of perovskite solar cells (PSCs). The properties of the interface can be modified using molecular interlayers between the halide perovskite and the transporting layers. This study introduces two structurally related molecules, TACB and TTAI, which can self-assemble through reciprocal hydrogen bond interactions. By combining these molecules with well-known hole transporting layers (HTLs), an improved photovoltaic performance was achieved in PSCs with inverted configuration.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Electrical & Electronic
Jian Song, Qinyuan Qiu, Xingzhou Su, Yulong Zhao, Yinghuai Qiang
Summary: The study demonstrated that the double-layer NiO hole transport layer can improve charge transfer at the NiO/perovskite interface and reduce carrier recombination loss of the device. Devices based on the double-layer NiO hole transport layer achieved higher fill factor and lower hysteresis effect, resulting in an increased power conversion efficiency of 14.3%.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Multidisciplinary Sciences
Ahmed Mourtada Elseman
Summary: A novel HTM based on silver thiocyanate (AgSCN) was synthesized and characterized for its use in p-i-n perovskite solar cells (PSCs). Thin, conformal AgSCN films were produced using a fast solvent removal approach, enabling quick carrier extraction and collection. The addition of AgSCN improved charge transfer between the HTL and perovskite layer, leading to enhanced performance compared to PEDOT:PSS. Crystallographic discrepancies were observed in the perovskite film, indicating the development of templated perovskite on the surface of AgSCN. With a high open circuit voltage (V-OC) and power conversion efficiency (PCE) of 16.66%, AgSCN-based PSCs show great potential for application in flexible modules or as a front cell in hybrid tandem solar cells.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Multidisciplinary
Fangwen Cheng, Ruiqin He, Siqing Nie, Chongjian Zhang, Jun Yin, Jing Li, Nanfeng Zheng, Binghui Wu
Summary: The introduction of perovskite quantum dots as interlayers in perovskite solar cells significantly enhances their performance, efficiency, and stability. These quantum dots play a universal role in improving the interactions between different materials, showing great potential for commercial applications.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Zhengwu Pan, Darui Peng, Xiujie Zhao, Weifeng Xu, Yinyu Bao, Ziqian Feng, Qin Zou, Bo Xu, Yue Wang, Han Gao, Chengrong Yin, Renzhi Li, Jianpu Wang, Wei Huang
Summary: Compared with inverted 3D perovskite solar cells, inverted quasi-2D perovskite solar cells have device stability advantages, but lower device efficiency. In this study, two novel polymer hole-transporting materials (HTMs) with passivation functions were designed for the inverted quasi-2D perovskite solar cells. These polymer HTMs exhibited excellent film-forming properties, well-matched energy levels, and improved charge mobility, leading to enhanced charge extraction and transport. By introducing methylthio units, the polymer HTMs enhanced contact with the perovskite, passivated interface defects, and facilitated the deposition of high-quality perovskite. The resulting inverted quasi-2D perovskite solar cells achieved impressive power conversion efficiency (PCE) and improved stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Hanadi Mehdi, Muriel Matheron, Asya Mhamdi, Stephane Cros, Abdelaziz Bouazizi
Summary: Research was conducted on the impact of HTLs on the growth process and photovoltaic performance of perovskite active layers, analyzing the effects of various HTL materials and thermal annealing treatments on device performance.
Through various methods such as scanning electron microscopy, X-ray diffraction, and spectroscopy, the effects of HTLs on perovskite solar cells were explored.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Physical
Jianxing Xia, Yi Zhang, Chuanxiao Xiao, Keith Gregory Brooks, Min Chen, Junsheng Luo, Hua Yang, Nadja Isabelle Desiree Klipfel, Jihua Zou, Yu Shi, Xiaojun Yao, Jiangzhao Chen, Joseph M. Luther, Hongzhen Lin, Abdullah M. Asiri, Chunyang Jia, Mohammad Khaja Nazeeruddin
Summary: This study reports a new dopant, DIC-PBA, as an alternative to Li-TFSI/t-BP, which improves the stability and efficiency of perovskite solar cells. Experimental results show that DIC-PBA can effectively dope HTMs and the perovskite surface, improving interfacial charge transport and thus enhancing the stability and efficiency of the cells.
Article
Engineering, Environmental
Ming-Wei An, Bolin Li, Bin -Wen Chen, Zuo-Chang Chen, Han-Rui Tian, Lin-Long Deng, Xugang Guo, Zhou Xing
Summary: In this study, two star-like, dopant-free, corannulene-cored HTMs with O-terminals (Cor-OMePTPA) and S-terminals (Cor-SMePTPA) were fabricated for inverted PSCs. The Cor-SMePTPA HTM demonstrated better hole-transporting ability and interfacial contact resulting in a power conversion efficiency of 21.70%, the highest among inverted PSCs based on SMe-terminated HTMs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Danpeng Gao, Bo Li, Zhen Li, Xin Wu, Shoufeng Zhang, Dan Zhao, Xiaofen Jiang, Chunlei Zhang, Yan Wang, Zhenjiang Li, Nan Li, Shuang Xiao, Wallace C. H. Choy, Alex K. -Y. Jen, Shangfeng Yang, Zonglong Zhu
Summary: A highly efficient and stable flexible perovskite solar cell (PSC) is reported by modifying the interface between perovskite and hole transport layer using pentylammonium acetate (PenAAc) molecule. The PenAAc-modified PSC achieves a record power conversion efficiency (PCE) of 23.68% and shows excellent stability under mechanical bending.
ADVANCED MATERIALS
(2023)
Article
Polymer Science
Dong-Xu Li, Shu-Fang Li, Cheng-Long Wen, Chao-Yuan Sun, Chang-Zhou Shi, Xin-Xin Xia, Xin-Hui Lu, Li-Hui Jiang, Jun Yuan, Ying-Ping Zou
Summary: In recent years, research on p-type electron donor materials that match current efficient small molecule acceptors (SMAs) has become important due to the rapid development of high-performance SMAs. By employing asymmetric strategies and taking advantage of fluorine atoms for noncovalent interactions and strong electron withdrawing properties, we designed and synthesized asymmetric aromatic side chain quinoxaline-based polymer donors TPQ-0F, TPQ-1F, TPQ-1Fi, and TPQ-2F. The binary device based on TPQ-2F achieved a high power conversion efficiency (PCE) of 16.27% due to balanced charge transport, reduced recombination, and improved morphology. Our work demonstrates the potential of asymmetric aromatic side chain quinoxaline-based polymer donors in optimizing film morphology and enhancing inter/intramolecular interactions for more efficient organic solar cells.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Ligang Yuan, Weiya Zhu, Yiheng Zhang, Yuan Li, Christopher C. S. Chan, Minchao Qin, Jianhang Qiu, Kaicheng Zhang, Jiaxing Huang, Jiarong Wang, Huiming Luo, Zheng Zhang, Ruipeng Chen, Weixuan Liang, Qi Wei, Kam Sing Wong, Xinhui Lu, Ning Li, Christoph J. Brabec, Liming Ding, Keyou Yan
Summary: Researchers have developed a dopant-free hole transport material (HTM) to improve the stability of n-i-p perovskite solar cells (PSCs). This new material has shown high power conversion efficiency and long-term stability.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Zhaotong Qin, Haibo Xue, Minchao Qin, Yuhao Li, Xiao Wu, Wei-Ru Wu, Chun-Jen Su, Geert Brocks, Shuxia Tao, Xinhui Lu
Summary: The influence of two isomeric A'-site ligands on the crystal growth of 2D perovskites was studied, revealing that branched iso-BA(+) facilitates the formation of large clusters and promotes the crystallization of vertically oriented 2D perovskites. Additionally, iso-BA(+) is less likely to be incorporated into the perovskite lattice, suppressing the formation of unwanted multi-oriented perovskites. These findings explain the better performance of 2D perovskite solar cells based on iso-BA(+) and elucidate the fundamental mechanism of ligand structural impact on 2D perovskite crystallization.
Article
Chemistry, Multidisciplinary
Heng Liu, Yuang Fu, Zeng Chen, Jiayu Wang, Jiehao Fu, Yuhao Li, Guilong Cai, Chun-Jen Su, U-Ser Jeng, Haiming Zhu, Gang Li, Xinhui Lu
Summary: This study develops a dual-additive-driven morphology optimization method for all-small-molecule organic solar cells (ASM-OSCs). By incorporating 1,4-diiodobenzene (DIB) and diiodomethane (DIM) as additives, the intermolecular interactions and acceptor phase separation can be modulated, while the over-aggregation of the donor is suppressed. The optimized ASM-OSC device achieves a power conversion efficiency (PCE) of 15.2%, one of the highest PCE reported for binary ASM-OSCs without solvent annealing treatment. This work demonstrates the potential of morphology tuning via the incorporation of dual additives into ASM-OSCs, enabling comparable efficiencies to those of conventional polymer/small-molecule based OSCs.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Han Yu, Yan Wang, Xinhui Zou, Han Han, Ha Kyung Kim, Zefan Yao, Zhibo Wang, Yuhao Li, Ho Ming Ng, Wentao Zhou, Jianquan Zhang, Shangshang Chen, Xinhui Lu, Kam Sing Wong, Zonglong Zhu, He Yan, Huawei Hu
Summary: Tuning the properties of non-fullerene acceptors (NFAs) through halogenation is a promising strategy to enhance the performance of organic solar cells (OSCs). However, the influence of F and Cl choice on molecular packing and performance between small-molecule and polymeric acceptors remains unclear. This study investigates the effects of fluorination and chlorination on small-molecule and polymeric acceptors, and finds that chlorinated small-molecule acceptors exhibit better performance due to their stronger intermolecular packing mode, while fluorinated polymers achieve a denser packing mode and better performance compared to chlorinated polymers.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fuliang Cheng, Yongjie Cui, Feng Ding, Zeng Chen, Qian Xie, Xinxin Xia, Peipei Zhu, Xinhui Lu, Haiming Zhu, Xunfan Liao, Yiwang Chen
Summary: Terpolymerization and regioisomerization strategies are utilized to develop novel polymer donors for improving the performance of organic solar cells (OSCs). The study shows that the position of chlorine substituents significantly affects the molecular planarity and electrostatic potential (ESP), thereby influencing the aggregation behavior and miscibility of the donor and acceptor. The terpolymer PM6-TTO-10 exhibits enhanced coplanarity, crystallinity, aggregation behavior, and phase separation, leading to efficient exciton dissociation and charge transfer. Consequently, OSCs based on PM6-TTO-10 achieve a high power conversion efficiency of 18.37% with an outstanding fill factor of 79.97%, which are among the highest reported for terpolymer-based OSCs.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yizhe Liu, Xintong Li, Shoufeng Zhang, Zilong Wang, Qi Wang, Yonghe He, Wei-Hsiang Huang, Qidi Sun, Xiaoyan Zhong, Jue Hu, Xuyun Guo, Qing Lin, Zhuo Li, Ye Zhu, Chu-Chen Chueh, Chi-Liang Chen, Zhengtao Xu, Zonglong Zhu
Summary: A molecularly engineered MOF system based on mercaptan-metal links has been designed, demonstrating excellent electroconductivity and efficient electrocatalytic oxygen evolution reaction (OER) performance.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Shengfan Wu, Jie Zhang, Minchao Qin, Fengzhu Li, Xiang Deng, Xinhui Lu, Wen-Jung Li, Alex K. -Y. Jen
Summary: By incorporating a cross-linkable organic ligand into the perovskite precursor solution, the facet orientation of polycrystalline perovskite films can be controlled, leading to enhanced performance of perovskite-based devices. The resulting low-dimensional perovskites (LDPs) can passivate defects and improve the efficiency and stability of perovskite solar cells (PSCs), with power conversion efficiencies (PCE) of 24.12% (rigid) and 23.23% (flexible). Furthermore, the ligand enables the derived LDPs to be crosslinked, enhancing the mechanical bending durability of flexible devices.
Article
Chemistry, Physical
Xiaofen Jiang, Xue Wang, Xin Wu, Shoufeng Zhang, Baoze Liu, Dong Zhang, Bo Li, Peng Xiao, Fang Xu, Haipeng Lu, Tao Chen, Alex K. -Y. Jen, Shangfeng Yang, Zonglong Zhu
Summary: This work reports a facile and effective strategy to stabilize alpha-FAPbI(3) perovskite in inverted perovskite solar cells (PVSCs) by regulating the residual strain through the incorporation of pseudo halide-based ionic liquids. The addition of methylamine formate (MAFa) ionic liquid enables the maintenance of a homogeneously stronger compressive strain, resulting in a record power conversion efficiency (PCE) of 24.08% among reported inverted FAPbI(3) perovskite solar cells and enhanced device stability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Julianna Panidi, Eva Mazzolini, Flurin Eisner, Yuang Fu, Francesco Furlan, Zhuoran Qiao, Martina Rimmele, Zhe Li, Xinhui Lu, Jenny Nelson, James R. Durrant, Martin Heeney, Nicola Gasparini
Summary: The use of biorenewable solvents 2MeTHF and CPME to process the active layers of organic photovoltaic devices without additional additives achieves high performance, opening the door to large-scale and green manufacturing of organic solar cells.
ACS ENERGY LETTERS
(2023)
Article
Energy & Fuels
Xiaopeng Zheng, Zhen Li, Yi Zhang, Min Chen, Tuo Liu, Chuanxiao Xiao, Danpeng Gao, Jay B. Patel, Darius Kuciauskas, Artiom Magomedov, Rebecca A. Scheidt, Xiaoming Wang, Steven P. Harvey, Zhenghong Dai, Chunlei Zhang, Daniel Morales, Henry Pruett, Brian M. Wieliczka, Ahmad R. Kirmani, Nitin P. Padture, Kenneth R. Graham, Yanfa Yan, Mohammad Khaja Nazeeruddin, Michael D. McGehee, Zonglong Zhu, Joseph M. Luther
Summary: To improve the manufacturability of perovskite solar cells, researchers have developed a one-step solution-coating procedure that simplifies the fabrication process and addresses wettability issues.
Article
Chemistry, Multidisciplinary
Dan Zhao, Donghyun Kim, Sarbani Ghosh, Gang Wang, Wei Huang, Zonglong Zhu, Tobin J. Marks, Igor Zozoulenko, Antonio Facchetti
Summary: The effects of polymer backbone bending stiffness and film microstructure on mechanical flexibility and charge transport are investigated. The study shows that reducing the content of a conjugated comonomer in the polymer backbone can increase mechanical robustness while maintaining efficient charge transport.
ADVANCED FUNCTIONAL MATERIALS
(2023)