Article
Chemistry, Physical
Haijuan Zhang, Wei Hui, Ze Wang, Mingqi Li, Haolan Xi, Yonghao Zheng, Xiaodong Liu
Summary: The UV-light induced H+ doping strategy significantly improves the conductivity of PTPD, leading to enhanced efficiency and stability of perovskite solar cells.
MATERIALS TODAY ENERGY
(2022)
Article
Chemistry, Applied
Licheng Liu, Yawei Miao, Mengde Zhai, Tai Wu, Xingdong Ding, Haoxin Wang, Cheng Chen, Yong Hua, Li Guo, Ming Cheng
Summary: In this paper, a new electron donor ACR-Cz-DM is reported, which significantly improves the performance of perovskite solar cells. ACR-Cz-DM is constructed based on ACR and Cz-DM, exhibiting excellent hole mobility and conductivity, as well as good film formation and outstanding charge extraction and transport ability. The photoelectric conversion efficiency (PCE) of FAPbI3-based PSCs using ACR-Cz-DM as the electron donor reaches 21.37%, surpassing that of Spiro-OMeTAD-based PSCs (20.10%) under the same conditions.
Review
Chemistry, Multidisciplinary
Chenkai Sun, Can Zhu, Lei Meng, Yongfang Li
Summary: This review article summarizes the recent developments of Qx-based D-A copolymer donors, including synthetic methods, backbone modulation, side chain optimization, and functional substitutions. Furthermore, the application of Qx-based D-A copolymers as hole transport material in pero-SCs is also introduced.
ADVANCED MATERIALS
(2022)
Article
Engineering, Environmental
Qu Yang, Xiu Gong, Xiaosi Qi, Xuncheng Liu, Cheng Liu, Quanfeng Zhou, Qiang Sun, Yan Shen, Mingkui Wang
Summary: So far, SpiroOMeTAD has been extensively used in high-performance perovskite solar cells (PSCs) as the most studied hole transport layer (HTL) material. However, its long-term stability is limited by sensitivity to moisture and ion diffusion. In this study, we introduce a highly hydrophobic tetrathiophene polymer (PAQM-DPP) as a chemically tailored modifier for SpiroOMeTAD HTL, which forms a robust bilayer structure and significantly improves stability and tolerance to moisture. Under constant illumination conditions in a N2 atmosphere, the PSCs with the polymer/SpiroOMeTAD bilayer maintained over 92% PCE for 500 hours and exhibited higher tolerance to relative humidity compared to the SpiroOMeTAD HTL counterpart.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Applied
Shuang Ma, Xianfu Zhang, Xuepeng Liu, Rahim Ghadari, Molang Cai, Yong Ding, Muhammad Mateen, Songyuan Dai
Summary: A facile star-shaped hole transport material (HTM) incorporating pyridine core (H-Pyr) was designed and synthesized, showing better hole mobility and well-matched work function compared with a benzene core HTM (H-Ben). The perovskite solar cells using H-Pyr exhibited improved crystallization, charge extraction, and reduced recombination, resulting in higher efficiency and long-term stability compared to H-Ben-based cells. Doping with a Lewis acid further enhanced the efficiency of the H-Pyr-based devices, making them a promising alternative to conventional HTMs like PEDOT:PSS.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Yaohang Cai, Yuyan Zhang, Jing Zhang, Xun Pan, Mats R. Andersson, Peng Wang
Summary: Researchers have improved the performance of perovskite solar cells by synthesizing a new material called p-TNI2. Compared to traditional materials, p-TNI2 has advantages in terms of carrier mobility and thermal stability, while achieving a similar high efficiency.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Laura Canil, Jagadish Salunke, Qiong Wang, Maning Liu, Hans Kobler, Marion Flatken, Luca Gregori, Daniele Meggiolaro, Damiano Ricciarelli, Filippo De Angelis, Martin Stolterfoht, Dieter Neher, Arri Priimagi, Paola Vivo, Antonio Abate
Summary: This study investigates the advantages of using a hole-transport material (HTM) that can anchor to the perovskite surface through halogen bonding (XB) to improve the performance and stability of perovskite solar cells (PSCs). The interaction between the halogen-functionalized HTM and perovskite is supported by simulations and experiments, leading to an improved interface and energy level alignment. The compact and ordered interface enhances resistance to solvent exposure, suppresses nonradiative recombination, reduces hysteresis, and results in a remarkable stability of the PSCs.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Haoxin Wang, Cheng Wu, Mengde Zhai, Cheng Chen, Li Tao, Xingdong Ding, Yawei Miao, Ming Cheng
Summary: Efficient hole transport and excellent film formation properties are crucial for hole transport materials (HTMs) in perovskite solar cells (PSCs). By optimizing molecular structure and enlarging the pi-conjugation system, low-cost and highly efficient HTMs can be developed.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Jacob B. Hoffman, Daniel D. Astridge, So Yeon Park, Fei Zhang, Mengjin Yang, David T. Moore, Steven P. Harvey, Kai Zhu, Alan Sellinger
Summary: This article introduces a family of polymers based on either fluorene or carbazole main chains, which have selective aromatic side groups to tune their properties for use as hole transport materials (HTMs) in PSCs. The impact of the HTM properties on PSC performance is explored, and it is found that these polymers perform well and exhibit greater stability compared to the benchmark PTAA.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xinyu Shen, Seon Lee Kwak, Woo Hyeon Jeong, Ji Won Jang, Zhongkai Yu, Hyungju Ahn, Hea Jung Park, Hyosung Choi, Sung Heum Park, Henry J. Snaith, Do-Hoon Hwang, Bo Ram Lee
Summary: The use of thermally crosslinked hole transport material (poly-FBV) improves the external quantum efficiency and operational lifetime of perovskite LEDs, potentially enabling their commercialization.
Article
Engineering, Environmental
Xingdong Ding, Haoxin Wang, Cheng Chen, Hongping Li, Yi Tian, Qijun Li, Cheng Wu, Liming Ding, Xichuan Yang, Ming Cheng
Summary: In this study, two new hole transport materials based on phenothiazine core building blocks were reported for use in highly efficient perovskite solar cells (PSC). The results demonstrated that the PTZ-Py material exhibited excellent performance in modifying perovskite surface defects, improving electronic properties, and stability in PSCs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Qiang Fu, Xingchen Tang, Hang Liu, Rui Wang, Tingting Liu, Ziang Wu, Han Young Woo, Tong Zhou, Xiangjian Wan, Yongsheng Chen, Yongsheng Liu
Summary: An alloy strategy using two conjugated polymers has been demonstrated for dopant-free hole transport material in high-performance perovskite solar cells, improving efficiency and stability significantly.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Kausar Ali Khawaja, Yeasin Khan, Yu Jung Park, Jin Hee Lee, Ju Hwan Kang, Kiwoong Kim, Yeonjin Yi, Jung Hwa Seo, Bright Walker
Summary: The study discusses improvements in charge transport layers of perovskite solar cells, introducing a new polyelectrolyte as the hole transport layer which, when combined with PEDOT:PSS, shows better performance and achieves a higher power conversion efficiency.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Energy & Fuels
Yuanbo Yang, Shuo Wang, Simiao Li, Tiantian Li, Peng Chen, Qian Zhao, Guoran Li
Summary: For the first time, a perovskite quantum dot interlayer is used to solve the interface issue in carbon-based hole transport material-free perovskite solar cells, which acts as a morphology changer, defect passivator, and photogenerated hole extractor. Compared with the pristine perovskite film, the PQD-modified perovskite absorber shows increased contact area and high compatibility with the carbon electrode, leading to an improvement in device efficiency from 16.71% to 17.93%.
Article
Energy & Fuels
Ju Won Yang, Rak Hyun Jeong, Jin-Hyo Boo
Summary: Organic-inorganic lead halide perovskites have been widely used in various fields, particularly in solar cells, due to their numerous advantages. However, their performance is greatly affected by external environments, necessitating detailed research to improve their performance and prevent degradation. This study aimed to enhance the utilization of UV-light in perovskite solar cells by introducing Eu-complex as a down-conversion material. The results showed that the Eu-complex significantly improved the energy conversion efficiency and increased the light-harvesting in the UV region.
