Article
Engineering, Environmental
Tian Zheng, Hang Zhou, Bin Fan, Yang Zhao, Bo Jin, Lisheng Fan, Rufang Peng
Summary: A novel conducting cathode interlayer for perovskite solar cells was synthesized by combining ionene polymer with pendent fullerene in this study. The C-60-MPE-ionene polymer significantly improved interface contact, tuned work function of metal cathode, and reduced energy level barrier, resulting in high efficiency devices. Furthermore, the hydrophobic conductive fullerene ionene polymers enhanced the resistance of perovskite films to moisture, showing promising potentials for future cathode modification materials in PSCs.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Mengqi Cui, Yuting Li, Na Li, Xiujuan Hao, YangYang Zhang, Qikun Rong, Guofu Zhou, Li Nian
Summary: In this study, ZnO was modified with organosilica nanodots (OSiNDs) as cathode interlayers for polymer organic solar cells (PSCs). The ZnO/OSiNDs bilayer exhibited a suitable work function and high conductivity. The device based on ZnO/OSiNDs achieved a PCE of 17.87% and remained stable even with a thicker interlayer.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Energy & Fuels
Ke Lu, Hong Chen, Yu Cai, Xingchen Liu, Yaowu He, Chaoyi Yan, Feng Yan, Zhao Hu, Hong Meng
Summary: In this study, a novel multinitrogen derivative interlayer, Anth-hpp2, was designed and synthesized between the PCBM and top Ag electrode in inverted perovskite solar cells. The superbase group in Anth-hpp2 effectively contacts the silver electrode, reducing the work function of Ag. As a result, the power conversion efficiency of the Anth-hpp2-based device improved from 16.05% to 20.37%, along with enhancements in short-circuit current and fill factor. The stabilities of perovskite solar cells with Anth-hpp2 were also greatly improved.
Article
Chemistry, Multidisciplinary
Naihe Liu, Jian Xiong, Gang Wang, Zhen He, Junqian Dai, Yongsong Zhang, Yu Huang, Zheling Zhang, Dongjie Wang, Sha Li, Bo Liu, Xuefan Deng, Haibo Zhang, Jian Zhang
Summary: Efficient modification of the interface between metal cathode and electron transport layer using alcohol-soluble rhodamine-functionalized dodecahydro-closo-dodecaborate derivate RBH improves the performance and stability of inverted perovskite solar cells. RBH acts as an efficient cathode interlayer that overcomes the issues at the PCBM/Ag interface, resulting in a high power conversion efficiency of 21.08% and a high fill factor of 83.37%.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Applied
Daizhe Wang, Cong Kang, Tengling Ye, Dongqing He, Shan Jin, Xiaoru Zhang, Xiaochen Sun, Yong Zhang
Summary: A nanoionene polymer was synthesized and used as a cathode interlayer in inverted perovskite solar cells to enhance interface contact, reduce energy level barriers, and prevent ion migration. The polymer, combined with bathophenantroline as a cathode interlayer, resulted in a higher efficiency device. Furthermore, the mixed cathode interlayer significantly enhanced resistance to ions and moisture, leading to improved device stability.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Energy & Fuels
Wenhuai Feng, Jin-Feng Liao, Meifang Yang, Jun-Xing Zhong, Bing-Xin Lei, Liming Ding, Wu-Qiang Wu
Summary: The research demonstrates a simple low-temperature solution-processed strategy for the first time to fabricate an amorphous metal oxyhydroxide (a-MOH) thin film, which is used as a robust cathode interlayer in inverted PSCs. The a-MOH interlayer not only facilitates electron extraction and collection through energy-favorable electron tunneling, but also suppresses interfacial charge recombination through effective hole blocking and electron backflow inhibition.
Article
Multidisciplinary Sciences
Zhen Li, Bo Li, Xin Wu, Stephanie A. Sheppard, Shoufeng Zhang, Danpeng Gao, Nicholas J. Long, Zonglong Zhu
Summary: Functionalizing the interfaces of multication and halide perovskite solar cells with an organometallic compound, ferrocenyl-bis-thiophene-2-carboxylate (FcTc(2)), enhances their efficiency and stability. The resulting devices exhibit high performance and stability, as demonstrated by tests and continuous operation.
Article
Chemistry, Physical
Yi Yang, Yang Xiao, Bowei Xu, Jianhui Hou
Summary: A cross-linked and n-doped cathode interlayer (c-NDI:N) has been developed for highly efficient and stable organic solar cells. The c-NDI:N@200°C film shows excellent robustness, high conductivity, and good film morphology. The inverted organic solar cell using c-NDI:N@200°C as the interlayer achieves a high power conversion efficiency of 17.5% and maintains its performance even with increased interlayer thickness up to 100 nm. Additionally, the c-NDI:N layer can protect the device from water and can be used for photoelectrochemical water-splitting.
ADVANCED ENERGY MATERIALS
(2023)
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, Physical
Lijun Chen, Zhipeng Yin, Sikai Mei, Xunwen Xiao, Hai-Qiao Wang
Summary: Zwitterionic molecules are utilized to modify the ZnO cathode interlayer in inverted CsPbI2Br perovskite solar cells, passivating defects at the interface of CsPbI2Br/ZnO and improving electron extraction efficiency. This results in enhanced charge transfer, suppressed charge recombination, and desirable energy level alignment at the cathode contact, leading to superior optoelectronic device performance and stability. Additionally, the champion efficiency is significantly improved with V-OC up to 1.25 V and FF of 76.83%, while the optimized device maintains around 80% of its initial efficiency for 32 days under illumination and 18 days stored in ambient air.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Multidisciplinary
Chunsheng Cai, Jia Yao, Lie Chen, Zhongyi Yuan, Zhi-Guo Zhang, Yu Hu, Xiaohong Zhao, Youdi Zhang, Yiwang Chen, Yongfang Li
Summary: Naphthalocyanine derivatives (SiNcTI-N and SiNcTI-Br) were used as cathode interlayer materials (CIMs) in organic solar cells for the first time, showing excellent performance. Among them, SiNcTI-Br CIM exhibited high conductivity and electron mobility, effectively enhancing the efficiency of PM6:Y6-based OSCs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
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
Polymer Science
Muhammad Rafiq, Jianhua Jing, Yuanying Liang, Zhicheng Hu, Xi Zhang, Haoran Tang, Li Tian, Yingwei Li, Fei Huang
Summary: DPTFBr is a novel pyridinium-pended conjugated polyelectrolyte that undergoes a transition from a pristine state to a radical state through a photo-induced amine doping process, enabling high rates of photocatalytic hydrogen evolution and efficient electron transport/collection in organic solar cells with a power conversion efficiency of over 16%.
Article
Engineering, Environmental
Chunyan Lu, Xiaodong Li, Xuemin Guo, Sheng Fu, Wenxiao Zhang, Haobo Yuan, Junfeng Fang
Summary: By introducing the humidity-assisted polymerizable additive MMDS, efficient CsPbI3 perovskite solar cells (PSCs) can be fabricated in common air without humidity control. MMDS molecules can react with water in the air and self-polymerize to form a water-resistant polymer at grain boundaries, preventing further moisture invasion. The -SH group in MMDS can passivate under-coordinated Pb2+ and reduce trap density in CsPbI3 films. As a result, high efficiencies of >18% are achieved in inverted CsPbI3 PSCs regardless of the relative humidity between 40% and 80%.
CHEMICAL ENGINEERING JOURNAL
(2023)
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
Engineering, Environmental
Zhenye Li, Feng Peng, Huilei Quan, Xitang Qian, Lei Ying, Yong Cao
Summary: This study aimed to boost the thermal stability of PSCs based on Y-series acceptors by polymerizing Y5-F-Br to obtain PFA1. The excellent film stability of PFA1 effectively suppressed thermally induced phase separation, achieving over 98% thermal stability at 100 degrees C for over 1 year. The use of long-chain acceptor for improving thermal stability was also confirmed in other commonly used PSCs, suggesting polymerizing non-fullerene small molecule acceptors is an effective and universal strategy for enhancing PSCs' thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Crystallography
Sijing Zhong, Boon Kar Yap, Zhiming Zhong, Lei Ying
Summary: Non-fullerene acceptors, specifically Y6-based ones, have shown great potential in achieving high efficiency in organic solar cells, with efforts being made to improve their performance through structural modifications and device engineering. Machine learning could play a key role in designing multifunctional organic devices with desired performances in the future.
Article
Chemistry, Multidisciplinary
Difei Zhang, Yuanfeng Li, Meijing Li, Wenkai Zhong, Thomas Heumuller, Ning Li, Lei Ying, Christoph J. Brabec, Fei Huang
Summary: The incorporation of solid additives in organic photovoltaics can improve device performance and stability by adjusting molecular structure. By introducing a specific compound, processing methods can be simplified and batch differences can be reduced, providing guidelines for commercial applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Xitang Qian, Gaoyang Wang, Zhenye Li, Lei Ying, Yong Cao
Summary: In this study, the introduction of a solvent additive, 1,8-diiodooctane (DIO), was found to regulate the performance of all-polymer solar cells (all-PSCs) and enable the fabrication of large-area all-PSCs. The results demonstrate that the device with DIO only experienced a 3.3% decrease in power conversion efficiency (PCE) when the device area expanded to 0.5 cm(2), which is the lowest attenuation value achieved for 0.5-1 cm(2) all-PSCs to date.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Physical
Xiaozhe Su, Zhenqiang Huang, Zhiming Zhong, Feng Peng, Ting Guo, Liwen Hu, Lei Ying
Summary: A solution-processable molecule, S-F4SO, containing enantiomerically chiral side-chains, was designed and showed weak circular dichroism (CD) and insignificant circularly polarized photoluminescence (CPPL) signal. The chiral perturbation strategy effectively enhanced the CD and CPPL signal when S-F4SO was blended with an achiral polymer, PFO. The resulting circularly polarized light-emitting dioxides exhibited deep blue circularly polarized electroluminescence with good spectral stability.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Zhiming Zhong, Zhaomiyi Zeng, Zhenqiang Huang, Feng Peng, Penghui He, Linfeng Lan, Lei Ying
Summary: This work investigates the effect of charge injection barrier on the dark current density of organic photodetectors. It is found that increasing fluorine substituents in the end groups of the non-fullerene acceptor reduces both the electron and hole injection barriers, leading to an increase in dark current.
ORGANIC ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Sijing Zhong, Han Chen, Jinglin Yi, Tao Yang, Ziqi Gan, Xiaozhe Su, Meijing Li, Zhiming Zhong, Feng Peng, Lei Ying
Summary: This manuscript presents the design and synthesis of a new n-type semiconductor TPBT-OR by introducing alkoxythiophene into Y5. The experimental results demonstrate that TPBT-OR exhibits good spectral response performance in the near-infrared wavelength range.
ORGANIC ELECTRONICS
(2022)
Article
Engineering, Environmental
Zhenye Li, Yingfang Liang, Lin Chen, Jian Chen, Feng Peng, Lei Ying
Summary: The development of polymerized small molecule acceptors (PSMA) has led to breakthroughs in all-polymer solar cells (all-PSCs), but the use of halogenated solvents is harmful to the environment and human health. To address this, PZT was introduced into a high-efficiency all-PSCs system to improve solubility and stability. The doping of PZT significantly improved the stability of all-PSCs and demonstrated the compatibility for practical applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Huilei Quan, Zhiming Zhong, Tianyu Hao, Kang An, Wenkai Zhong, Cheng Wang, Feng Liu, Lei Ying, Fei Huang
Summary: Sequential casting (SC) can improve the film morphology of donor:acceptor blend layers and enhance the performance of organic photodetectors (OPDs). In this study, a refined fibrillar multiphase morphology is achieved by SC in an NT812:IEICO-4F blend film, leading to improved charge generation and collection, reduced trap states, and enhanced charge block capability. As a result, the OPD exhibits high external quantum efficiency and low dark/noise current, achieving a maximum special detectivity of 5 x 10(13) Jones at 860 nm. Similar enhancements are observed in OPD devices based on other blend systems with similar fibrillar refinement, providing guidelines for film structure manipulation towards high OPD performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Yue Yu, Pei Xu, Yuyu Pan, Xianfeng Qiao, Lei Ying, Dehua Hu, Dongge Ma, Yuguang Ma
Summary: In this study, a new blue hot exciton material, CPPCN, was designed and synthesized, which has multiple high-lying triplet states near the lowest singlet excited state. The ultrafast RISC process facilitated by these high energy triplet states allows the non-doped blue OLED based on CPPCN to achieve high external quantum efficiency and suppressed efficiency roll-off.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Polymer Science
Zhi-Ming Zhong, Feng Peng, Lei Ying, Zhen-Qiang Huang, Wen-Kai Zhong, Gang Yu, Yong Cao, Fei Huang
Summary: Through introducing larger heteroatom, regio-regular backbone, and extended branching position of the side-chain, we developed polymer semiconductors (PPCPD) with a narrow band-gap to construct the photosensing layer of thin-film photodiodes and image arrays. The resulting organic photodiodes exhibited a spectral response ranging from near ultraviolet to short-wavelength infrared, achieving a competitive performance with inorganic crystalline detectors in the 900-1200 nm range. The high photodetectivity and quantum efficiency of the amorphous/nanocrystalline thin-film photodiode enabled high pixel-density image arrays without pixel-level patterning in the sensing layer, allowing for high pixel-density short-wavelength infrared imaging at room temperature.
CHINESE JOURNAL OF POLYMER SCIENCE
(2023)
Article
Materials Science, Biomaterials
Liwen Hu, Linrui Shi, Tianze Hu, Peiling Chen, Ting Guo, Chunxiao Wang, Renqiang Yang, Lei Ying
Summary: By manipulating molecular motion, donor-acceptor type conjugated polymers with high extinction coefficient and excellent photothermal conversion ability have been designed and synthesized. These polymers can serve as efficient photothermal agents, achieving complete tumor remission in vivo.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Polymer Science
Hong Qiu, Zhi-ming Zhong, Mei-jing Li, Lei Ying, Gang Yu, Pei Huang, Yong Cao
Summary: In this study, a wide-bandgap polymer was successfully synthesized and combined with a non-fullerene acceptor to fabricate organic photodetectors with an inverted device structure. Optimizing the film thickness of the active layer significantly reduced the dark current density while maintaining a high external quantum efficiency, resulting in improved detectivity.
ACTA POLYMERICA SINICA
(2022)
Article
Materials Science, Multidisciplinary
Xinrui Miao, Zhengkai Cai, Hengqi Zou, Jinxing Li, Songyao Zhang, Lei Ying, Wenli Deng
Summary: This study systematically investigated the impact of introducing phenyl and bromine substituents on AIE materials, and found that different positions of bromine substituents can lead to diverse intermolecular interactions, with intermolecular Br-Br bonds playing a dominant role in fluorescence efficiency. Furthermore, a comprehensive exploration of MC and AIE properties contributes to the development of materials with higher luminous efficiency.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Zhenye Li, Feng Peng, Xitang Qian, Jingwen Li, Zhiming Zhong, Lei Ying, Hongbin Wu, Fei Huang, Yong Cao
Summary: The researchers successfully regulated the bulk-heterojunction (BHJ) morphology of all-polymer solar cells (all-PSCs) by selecting solvents and optimized the morphology evolution, resulting in improved power conversion efficiency.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)