Article
Chemistry, Multidisciplinary
Dan Zhao, Danpeng Gao, Xin Wu, Bo Li, Shoufeng Zhang, Zhen Li, Qi Wang, Zongxiao Wu, Chunlei Zhang, Wallace C. H. Choy, Xiaoyan Zhong, Qiyuan He, Zonglong Zhu
Summary: This study presents a facile strategy to construct a 3D/2D vertical heterostructure to improve the efficiency and stability of perovskite solar cells (PVSCs). By integrating 2D perovskite nanosheets onto the surface of 3D-FAPbI(3)-based perovskites, a type-I heterojunction is formed that suppresses trap-assisted recombination at the interface. The resulting PVSCs exhibit improved power conversion efficiency and enhanced stability.
ADVANCED MATERIALS
(2022)
Article
Energy & Fuels
Shun-Hsiang Chan, Yin-Hsuan Chang, Meng-Huan Jao, Kai-Chi Hsiao, Kun-Mu Lee, Chao-Sung Lai, Ming-Chung Wu
Summary: The presence of toxic lead in perovskite solar cells hinders their commercialization. This study investigates the effects of adding phenethylammonium chloride as an additive to improve film formation and enhance the efficiency and stability of perovskite solar cells.
Article
Energy & Fuels
Muhammad Younas, Mohammed A. Gondal, Mohamed A. Dastageer
Summary: This study focuses on growing single crystals of 2D/3D-blended perovskite, aiming to enhance carrier mobility while reducing grain boundaries, trap state densities, and charge recombination, all while improving material stability. Solar cells made using polycrystalline 3D perovskite, single crystal of 3D perovskite, and single crystal of 2D/3D-blended perovskite showed efficiencies of 4.55%, 6.37% and 5.37% respectively.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Ming Shao, Tong Bie, Lvpeng Yang, Yerun Gao, Xing Jin, Feng He, Nan Zheng, Yu Yu, Xinliang Zhang
Summary: This study fabricated 2D perovskite solar cells incorporating FA, MA, and FA/MA, resulting in significantly enhanced light absorption and device stability. The introduction of FA cations increased the 3D-like phase relative to 2D phases and effectively suppressed the formation of the yellow delta phase.
ADVANCED MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Guangbao Wu, Rui Liang, Mingzheng Ge, Guoxing Sun, Yuan Zhang, Guichuan Xing
Summary: 3D perovskite solar cells face challenges in surface defects and material interplay. 2D perovskites provide better stability as a protective barrier. Surface passivation using 2D perovskites enables higher efficiency and stability.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Adva Shpatz Dayan, Malgorzata Wierzbowska, Lioz Etgar
Summary: In this work, 2D chiral perovskite materials with different chiralities were synthesized and integrated into solar cells. The chiral effect on the photovoltaic response of the solar cells was investigated, and it was found that the chirality could affect the current density of the solar cell. This study provides insights into the development of polarized hybrid perovskites for optoelectronic applications.
Review
Energy & Fuels
Tao Lin, Tingting Dai, Xiong Li
Summary: Perovskite materials have shown excellent performance in solar cells, with device efficiency exceeding 25%. However, large-scale production of perovskite solar cells (PSCs) has not been achieved yet. The main obstacle for commercializing PSCs is the stability problem that has been widely criticized since their inception. In the past 5 years, the emergence of 2D/3D perovskites has provided a new approach to solve this problem.
Editorial Material
Chemistry, Multidisciplinary
Elizabeth von Hauff
Summary: Perovskite photovoltaics have advantages for low-cost, efficient-energy production, but current interfacial losses restrict device performance and stability. Researchers visualize the energetic landscape of novel 2D/3D perovskite heterojunctions and demonstrate the potential of optimized 2D perovskite layers as transport layers for high-performance, stable perovskite photovoltaics.
Article
Engineering, Electrical & Electronic
Xiaolong Shen, Yuepeng Li, Haijin Li, Qiyun Wang, Zhu Ma, Changtao Peng, Wenfeng Zhang, Yuelong Huang
Summary: The study introduces hydrochloric acid and PCBM to modulate and passivate quasi-2D perovskite films, improving charge transfer and reducing nonradiative recombination, resulting in high efficiency solar cells with a PCE of 15.01% and negligible hysteresis.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Chemistry, Physical
Tinghuan Yang, Chuang Ma, Weilun Cai, Shiqiang Wang, Yin Wu, Jiangshan Feng, Nan Wu, Haojin Li, Wenliang Huang, Zicheng Ding, Lili Gao, Shengzhong (Frank) Liu, Kui Zhao
Summary: In this study, a 2D/3D heterostructure was formed in perovskite solar cells using amidino-based Dion-Jacobson 2D perovskite, which resulted in high efficiency and stability. Time-resolved optical diagnostics revealed that the 2D perovskite assisted the nucleation and growth of 3D perovskite during film formation, reducing defects and voids for efficient charge transport. The planar perovskite solar cells with 2D/3D heterostructures achieved efficiencies of 24.9% and 22.3% on rigid and flexible substrates, respectively, which are the highest among all 2D/3D composite solar cells. The stability of the cells was also improved, with 97% of the original efficiency retained after 1,000 hours of storage for rigid cells and 92% for flexible cells after 3,000 bending cycles.
Review
Chemistry, Physical
Selengesuren Suragtkhuu, Suvdanchimeg Sunderiya, Purevlkham Myagmarsereejid, Solongo Purevdorj, Abdulaziz S. R. Bati, Bujinlkham Bold, Yu Lin Zhong, Sarangerel Davaasambuu, Munkhbayar Batmunkh
Summary: This article summarizes the importance and challenges of perovskite solar cells (PSCs), as well as the recent research advances in using monoelemental 2D materials to improve PSCs performance.
ADVANCED ENERGY MATERIALS
(2023)
Review
Chemistry, Physical
Alessandro Caiazzo, Rene A. J. Janssen
Summary: This review discusses the toolbox and methods used for high efficiency solar cells based on Ruddlesden-Popper perovskites.
ADVANCED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Shibo Wang, Fengxian Cao, Yunjia Wu, Xiuchun Zhang, Jinjun Zou, Zhang Lan, Weihai Sun, Jihuai Wu, Peng Gao
Summary: Constructing 3D/2D hybrid perovskite heterojunctions using organic ammonium salt CMABr has been proven effective in improving the efficiency and stability of perovskite solar cells. The in-situ formation of ultrathin 2D perovskite layer with residual PbI2 helps passivate surface defects and protect the underlying 3D perovskite film, resulting in suppressed non-radiative recombination and superior moisture stability.
MATERIALS TODAY PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jie Xu, Jian Cui, Shaomin Yang, Zhike Liu, Xi Guo, Yuhang Che, Dongfang Xu, Wenjing Zhao, Ningyi Yuan, Jianning Ding, Shengzhong (Frank) Liu
Summary: In CsPbI2Br perovskite solar cells, the design of glycine halides can improve performance and form a 2D/3D hybrid structure to suppress ion migration, achieving a high power conversion efficiency of 17.26%. Additionally, the efficiency of the encapsulated device only decreases by 14.1% after continuous illumination for 340 hours in ambient conditions, representing one of the most stable inorganic PSCs reported so far.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Albertus A. Sutanto, Pietro Caprioglio, Nikita Drigo, Yvonne J. Hofstetter, Ines Garcia-Benito, Valentin I. E. Queloz, Dieter Neher, Mohammad Khaja Nazeeruddin, Martin Stolterfoht, Yana Vaynzof, Giulia Grancini
Summary: The study emphasizes the importance of interface engineering and design in optimizing multilayer device stacks, particularly in addressing interface issues in 2D/3D perovskite solar cells. It proposes methods to enhance device efficiency and stability by understanding the interface energetics and forming a p-n junction.
Article
Nanoscience & Nanotechnology
Yang Zhang, Zeyang Wang, Shu Hu, Pingyuan Yan, Heng Li, ChuanXiang Sheng
Summary: The study reveals a highly robust and swiftly reversible thermochromic nature of a two-dimensional perovskite, showing different optical properties at various temperatures. The perovskite film is demonstrated to be an active material for smart windows and thermochromic solar cells with potential applications in lowering inside air temperature and achieving power conversion efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Shu Hu, Xiaoliang Yan, Yang Zhang, Bo Yang, Heng Li, Chuanxiang Sheng
Summary: Quasi-2D perovskites are known for their moisture stability, but light exposure can induce photoluminescence quenching and film degradation, especially at high laser intensity and photon energy. These effects are significantly suppressed in a vacuum environment, and the degradation process of the film typically starts with collapses of the crystalline structures.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Physical
Shu Hu, Yongtao Huang, Yang Zhang, Pingyuan Yan, Heng Li, ChuanXiang Sheng
Summary: A significantly slow hot-carrier-cooling phenomenon is observed in a multiphase quasi two-dimensional perovskite film, resulting in a blue-shift and multi-peak emission in the photoluminescence spectra. Furthermore, hot-carrier emission from small n materials is observed using a continuous wave laser, leading to an abnormal enhancement of the open-circuit voltage.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Materials Science, Multidisciplinary
Yang Zhang, Zeyang Wang, Ting Liu, Bo Yang, Shu Hu, Heng Li, ChuanXiang Sheng
Summary: The characteristics of two-dimensional perovskite films prepared with different spin-casting speeds were investigated, and it was found that higher spin-casting speeds resulted in better crystalline quality and morphology uniformity. However, excessively high spin-casting speeds could lead to the formation of carrier trapping states, reducing device performance.
ELECTRONIC MATERIALS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Xiao Yang, Hongyang Qiu, Shu Hu, Chenglong Cao, Zhongqi Xie, Qingsong Jiang, Fei Huang, ChuanXiang Sheng
Summary: The study on the amplified spontaneous emission of a MAPbI(1.5)Br(1.5) film reveals different ASE spectra evolution under continuous wave and pulsed illumination, indicating variations in bromide compositional distribution during phase segregation in iodine-rich domains. Light control, such as adjusting repetition rate of pulsed illumination or duty cycle of Quasi-CW illumination, helps stabilize the ASE output at any wavelength within a specific range.
Article
Materials Science, Multidisciplinary
Pingyuan Yan, Shu Hu, Yang Zhang, Chengqiang Wang, Yuchen Wang, Heng Li, ChuanXiang Sheng
Summary: The study found that the two-dimensional perovskite (GA)MA(n)[PbnI3n+1] film can change from red to black in appearance and exhibit photoluminescence peaks shifting from 570nm to 770nm after soaking in isopropanol. By controlling the reaction time with isopropanol solvent, the film can rearrange into a new material mixture with different n values, demonstrating tunable absorption and photoluminescence spectra.
ORGANIC ELECTRONICS
(2022)
Article
Nanoscience & Nanotechnology
Xudan Zhu, Junbo He, Weiming Liu, Yuxiang Zheng, Chuanxiang Sheng, Yi Luo, Shaojuan Li, Rongjun Zhang, Junhao Chu
Summary: In this study, experimental evidence is presented to show that the monolayer h-BN insertion only partially blocks the interlayer carrier transfer, weakening the interlayer coupling effect. This explains the fascinating optoelectronic responses of graphene/h-BN/MoS2 devices. Additionally, the excitonic binding energies of graphene/h-BN/MoS2 are redshifted compared to graphene/MoS2, indicating the modulation effects of the h-BN barrier layer.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Energy & Fuels
Pingyuan Yan, Shu Hu, Heng Li, Wenhua Gu, ChuanXiang Sheng
Summary: This study explores the potential of layered two-dimensional perovskite for semitransparent devices. By adjusting the concentration of the precursor solution, films of different colors and performance can be obtained. The results show that the alternating cations in the interlayer space of the 2-D perovskite have the potential to be promising candidates for single-junction semitransparent solar cells.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Physics, Applied
J. He, Z. R. Zhao, H. Xia, T. Li, E. Liang, G. Ni, J. Wang, C. X. Sheng, L. Y. Chen, Y. Z. Wu, H. B. Zhao
Summary: We investigate the modulation of interlayer exchange coupling (IEC) between ferromagnet (FM) Fe and insulating antiferromagnet (AFM) CoO and its effect on Gilbert damping using a time-resolved magneto-optical Kerr effect technique. Inserting a wedge spin conductor Ag layer at the Fe/CoO interface reveals that the precession frequency and damping of the Fe film decrease with increasing Ag thickness, reaching intrinsic values above 2 nm where IEC is eliminated. The temperature dependence of the precession frequency and damping also follows a similar trend for attenuated IEC. These findings emphasize the crucial role of exchange coupling at the FM-AFM interface in spin angular momentum transfer and suggest implications for spintronic applications.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Haoxiang Zhou, Bin Li, Tao Li, Jianyu Yuan, Gang Ni, Jun Wang, Chuanxiang Sheng, Wanli Ma, Haibin Zhao
Summary: For perovskite quantum dot (PQD)-based solar cells, adding a proper polymer/PQD bulk heterojunction (BHJ) connecting layer can improve the power conversion efficiency (PCE). Through ultrafast transient absorption spectroscopy (TAs), it has been found that the hole transfer efficiency in the PBDB-T/PQD BHJ film is 68.4%, higher than that in PTB7 and P3HT BHJ films. This indicates that an optimal amount of conjugated polymer with effective hole transfer is important for overall charge carrier extraction in PQD-based solar cells.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Zihan Wu, Pingyuan Yan, Shu Hu, Bo Yang, Chengqiang Wang, Chenhong Xiang, Heng Li, ChuanXiang Sheng
Summary: The effects of precursor solution concentration, spin coating speed, and substrate temperature on the crystallinity and optical properties of (BA)2FA2Pb3I10 films were compared. Two-dimensional perovskite films and solar cells were fabricated on room temperature or 110 degrees C substrates using (BA)2(FA)n-1PbnI3n+1 with the same molar ratio of components and with thiourea added in the precursor solution. The concentration of the precursor solution had a significant impact on crystalline orientation and domain size, while spin coating speed showed no significant effect.
Article
Electrochemistry
Chengqiang Wang, Tao Song, Pingyuan Yan, Shu Hu, Chenhong Xiang, Zihan Wu, Heng Li, Haibin Zhao, Lili Han, Chuanxiang Sheng
Summary: In this study, ultra-small blue-emission CsPbBr3 nanoparticles were synthesized using liquid nitrogen freezing with DBSA ligand. Asymmetric narrow emissions at the low energy side were observed in solution and film, which may be caused by phonon vibronic replica and photoinduced re-alignment of nanoparticles.