Article
Chemistry, Physical
Xiufang Hou, Weiyi Zhang, Quan-Song Li
Summary: Surface passivation by organic dyes is an effective strategy to improve the efficiency and stability of perovskite solar cells. The challenge lies in understanding how subtle structural changes in dyes lead to different passivation effects. In this study, three donor-pi-acceptor dyes (SP1, SP2, and SP3) with distinct electron donors were used to passivate the perovskite surface, resulting in varying efficiency and stability of the solar cells.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Bo Li, Zhen Li, Danpeng Gao, Xin Wu, Xintong Li, Chunlei Zhang, Shuai Li, Jianqiu Gong, Dong Zhang, Xiangfan Xie, Shuang Xiao, Haipeng Lu, Mingjie Li, Zonglong Zhu
Summary: By designing long-chain alkylamines as crystallization buffer molecules, the residual strain in tin perovskite films was released, thus improving the photovoltaic performance and stability of lead-stabilized tin perovskite solar cells (TPSCs).
MATERIALS CHEMISTRY FRONTIERS
(2023)
Article
Multidisciplinary Sciences
Stefania Cacovich, Guillaume Vidon, Matteo Degani, Marie Legrand, Laxman Gouda, Jean-Baptiste Puel, Yana Vaynzof, Jean-Francois Guillemoles, Daniel Ory, Giulia Grancini
Summary: Interface engineering using passivating agents is an effective strategy to improve the performance of perovskite solar cells. This study investigates the interface and device physics of high efficiency inverted solar cells, quantifying charge recombination and losses. The results show that organic passivation mainly affects the perovskite/PCBM interface, and the use of organic passivation maximizes the photovoltaic figures of merit.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jiwei Liang, Xuzhi Hu, Chen Wang, Chao Liang, Cong Chen, Meng Xiao, Jiashuai Li, Chen Tao, Guichuan Xing, Rui Yu, Weijun Ke, Guojia Fang
Summary: This study reveals the origins and influences of metallic lead (Pb-0) in metal-halide perovskites, and provides a strategy for avoiding the formation of detrimental Pb-0 byproducts. This has significant implications for enhancing the performance of devices such as perovskite solar cells.
Article
Chemistry, Applied
Zheng Zhang, Liang Wang, Ajay Kumar Baranwal, Shahrir Razey Sahamir, Gaurav Kapil, Yoshitaka Sanehira, Muhammad Akmal Kamarudin, Kohei Nishimura, Chao Ding, Dong Liu, Yusheng Li, Hua Li, Mengmeng Chen, Qing Shen, Teresa S. Ripolles, Juan Bisquert, Shuzi Hayase
Summary: This study proposes an effective strategy based on trimethylsilyl halide surface passivation to enhance the film quality and stability of lead-free tin perovskite solar cells (PKSCs). The efficiency and stability of the solar cells were significantly improved after applying this strategy.
JOURNAL OF ENERGY CHEMISTRY
(2022)
Article
Chemistry, Physical
Pei-Ying Lin, Chen-Fu Lin, Yueh-Ya Chiu, Hong-Hsueh Chen, Ming-Hsien Li, Rajendran Raja, Chun-Sheng Wu, Cheng-Hung Hou, Silver Sung-Yun Hsiao, Jing-Jong Shyue, Der-Chuen Lee, Sheng-Zhu Ho, Yi-Chun Chen, Peter Chen
Summary: This study verifies the use of pseudo-halide anion thiocyanate as an additive in composition-engineered perovskite films and investigates its impact on the performance of perovskite solar cells (PSCs). It is observed that the incorporation of thiocyanate ions in the perovskite film significantly increases the domain size. Moreover, the presence of thiocyanate groups inside the perovskite bulk is confirmed, and it effectively suppresses bulk recombination in the perovskite film, leading to an improvement in the open-circuit voltage (VOC) and fill factor for the pseudo-halide-based PSCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Tao Zhu, Lening Shen, Hanlin Chen, Yongrui Yang, Luyao Zheng, Rui Chen, Jie Zheng, Junpeng Wang, Xiong Gong
Summary: Conjugated molecules have been effectively utilized to enhance the performance of perovskite solar cells, with the incorporation of novel conjugated aniline leading to improved efficiency and stability in the reported study. This demonstrates the potential of incorporating conjugated molecules as organic spacer cations to create 2D perovskites on top of 3D perovskites for high-performance PSCs.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Nanoscience & Nanotechnology
Zheng Zhang, Muhammad Akmal Kamarudin, Ajay Kumar Baranwal, Liang Wang, Gaurav Kapil, Shahrir Razey Sahamir, Yoshitaka Sanehira, Mengmeng Chen, Qing Shen, Shuzi Hayase
Summary: Defects at the surfaces and grain boundaries of tin halide perovskite solar cells hinder their performance improvement. Liquid surface passivation is commonly used to decrease these defects, but it decreases the short-circuit current density (Jsc). In this study, a vapor passivation method using solvent and passivation molecules is introduced, which enhances the efficiency and stability of the solar cells without decreasing Jsc.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Zheng Zhang, Muhammad Akmal Kamarudin, Ajay Kumar Baranwal, Liang Wang, Gaurav Kapil, Shahrir Razey Sahamir, Yoshitaka Sanehira, Mengmeng Chen, Qing Shen, Shuzi Hayase
Summary: This study introduces a new vapor passivation method to improve the performance of Sn halide perovskite solar cells. Compared to liquid passivation, vapor passivation does not decrease the short-circuit current density and can enhance the efficiency.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Dorothee Menzel, Amran Al-Ashouri, Alvaro Tejada, Igal Levine, Jorge Andres Guerra, Bernd Rech, Steve Albrecht, Lars Korte
Summary: Through ultra-sensitive near-UV photoelectron spectroscopy, the energy level alignment and defect formation at the perovskite/C-60 interface are investigated. It is found that the fullerene C-60 as the electron transport layer limits the open circuit voltage in metal halide perovskite solar cells. The voltage enhancement with the incorporation of a LiF interlayer at the interface can be attributed to a dipole effect and the presence of fixed charges.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Jinhyeok Choi, Seok Joo Yang, Se Gyo Han, Woong Sung, Dongho Yoo, Kilwon Cho
Summary: A multifunctional molecular additive, fulleropyrrolidine, is used for the first time to passivate the surfaces and grain boundaries in Sn-based perovskite solar cells (Sn-PSCs). This passivation suppresses nonradiative recombination, inhibits the formation of Sn4+ and I3-, and improves the stability of Sn-PSCs.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Kunal Datta, Junke Wang, Dong Zhang, Valerio Zardetto, Willemijn H. M. Remmerswaal, Christ H. L. Weijtens, Martijn M. Wienk, Rene A. J. Janssen
Summary: An integrated all-perovskite tandem solar cell is developed using surface passivation strategies to reduce non-radiative recombination, yielding a high open-circuit voltage. By using optically benign transparent electrode and charge-transport layers, absorption in the narrow-bandgap sub-cell is improved, leading to an improvement in current-matching between sub-cells.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Jiuyao Du, Jifeng Yuan, Jiahao Xi, Fei Huang, Jianjun Tian
Summary: In this study, 1-ethyl-3-methylimidazolium acetate ([EMIM]Ac) ionic liquid was introduced to passivate the surface defects of perovskite films, improving the performance and stability of metal halide perovskite solar cells. The carbonyl groups of [EMIM]Ac coordinate with the uncoordinated lead ions on the perovskite surface, reducing nonradiative recombination and improving working stability. The power conversion efficiency of the solar cell increased from 16.95% to 19.29% with [EMIM]Ac treatment. This surface passivation method using an ionic liquid may have significant implications for the development and practical application of perovskite solar cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Jialong Duan, Meng Wang, Yingli Wang, Junshuai Zhang, Qiyao Guo, Qiaoyu Zhang, Yanyan Duan, Qunwei Tang
Summary: This study demonstrates the importance of regulating the side group of a dipole molecule for interfacial passivation and surface energy level reconstruction of CsPbBr3 perovskite films to achieve efficient hole extraction and improve power conversion efficiency.
ACS ENERGY LETTERS
(2021)
Article
Multidisciplinary Sciences
Matteo Degani, Qingzhi An, Miguel Albaladejo-Siguan, Yvonne J. Hofstetter, Changsoon Cho, Fabian Paulus, Giulia Grancini, Yana Vaynzof
Summary: This study presents a dual interfacial modification approach by incorporating large organic cations at both the bottom and top interfaces of the perovskite active layer, leading to simultaneous improvement in both open-circuit voltage and fill factor of the devices, reaching a champion device efficiency of 23.7%. This dual interfacial modification is fully compatible with bulk modification of the perovskite active layer by ionic liquids, resulting in efficient and stable inverted architecture devices.
Article
Radiology, Nuclear Medicine & Medical Imaging
Anna Krzyczmonik, Katharina E. Grafinger, Thomas Keller, Lukas Pfeifer, Sarita Forsback, Merja Haaparanta-Solin, Veronique Gouverneur, Francisco Lopez-Picon, Olof Solin
Summary: This study presents an in-depth preclinical evaluation of [18F]FMTEB in healthy Sprague Dawley rats, demonstrating its potential as a good candidate for mapping mGluR5 in the rat brain.
NUCLEAR MEDICINE AND BIOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Chenxu Zhao, Hong Zhang, Masaud Almalki, Jia Xu, Anurag Krishna, Felix T. Eickemeyer, Jing Gao, Yu Mao Wu, Shaik M. Zakeeruddin, Junhao Chu, Jianxi Yao, Michael Gratzel
Summary: Defects at the interfaces and grain boundaries of perovskite films can lead to poor performance and stability of perovskite solar cells. This study introduces a new strategy of incorporating alkali-functionalized polymers into the antisolvent solution to manipulate the crystallization process of FAPbI(3)-rich perovskite. The synergic effects of alkali cations and poly(acrylic acid) anions effectively passivate the defects and improve the power conversion efficiency of the perovskite solar cells. The rubidium-functionalized poly(acrylic acid) also reduces the risk of lead ion leakage and enhances the operational stability.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Aditya Mishra, Michael A. Hope, Gabriele Stevanato, Dominik J. Kubicki, Lyndon Emsley
Summary: Researchers studied cesium lead chloride and found that metal-ion DNP provides the highest bulk sensitivity in this case, while highly surface-selective NMR spectra can be acquired using impregnation DNP. The performance of both methods is explained in terms of the relaxation times, particle size, dopant concentration, and surface wettability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Energy & Fuels
Tamara Merckx, Aranzazu Aguirre, Yinghuan Kuang, Arvid van der Heide, Ali Hajjiah, Yaser Abdulraheem, Anurag Krishna, Jef Poortmans, Tom Aernouts
Summary: We demonstrate the scaling up of perovskite photovoltaic technology with minimal performance losses by developing stable device architecture with industrially compatible processes. The monofacial (aperture area: 784 cm(2)) and bifacial (aperture area: 781 cm(2)) perovskite solar modules exhibit a power conversion efficiency of 13.1% and 11.9%, respectively. Moreover, the encapsulated bifacial mini-modules (aperture area: 4 cm(2)) retained around 92% of initial PCE after 1000 h of damp heat test.
IEEE JOURNAL OF PHOTOVOLTAICS
(2023)
Article
Chemistry, Physical
Thomas P. Baumeler, Essa A. Alharbi, George Kakavelakis, George C. Fish, Mubarak T. Aldosari, Miqad S. Albishi, Lukas Pfeifer, Brian I. Carlsen, Jun-Ho Yum, Abdullah S. Alharbi, Mounir D. Mensi, Jing Gao, Felix T. Eickemeyer, Kevin Sivula, Jacques-E Moser, Shaik M. Zakeeruddin, Michael Gratzel
Summary: CsX and RbX were excluded from the bulk of the perovskite thin films and used as passivation agents on the surface, resulting in a high power conversion efficiency of 24.1% and a fill factor of 82.2% when CsI was used as the passivation agent. The effect of CsI passivation on structural and optoelectronic properties was extensively investigated using various characterization techniques.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Kunal Datta, Alessandro Caiazzo, Michael A. Hope, Junyu Li, Aditya Mishra, Manuel Cordova, Zehua Chen, Lyndon Emsley, Martijn M. Wienk, Rene A. J. Janssen
Summary: Photoinduced halide segregation limits the widespread application of three-dimensional mixed-halide perovskites. In this study, we investigate the phenomenon of photoinduced halide segregation in lower-dimensional mixed iodide-bromide perovskites. We find that layered two-dimensional structures exhibit additional stability against halide demixing due to reduced halide mobility, which is supported by solid-state NMR analysis.
ACS ENERGY LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Xin Zhang, Stijn Eurelings, Andrea Bracesco, Wenya Song, Stijn Lenaers, Wouter Van Gompel, Anurag Krishna, Tom Aernouts, Laurence Lutsen, Dirk Vanderzande, Mariadriana Creatore, Yiqiang Zhan, Yinghuan Kuang, Jef Poortmans
Summary: This study successfully improved the performance of perovskite solar cells (PSCs) by adding trace amounts of bithiophene propylammonium iodide (bi-TPAI) to the surface of gas-quenched perovskite. The bi-TPAI treatment effectively passivates defects and enhances charge carrier extraction, resulting in increased conversion efficiency and operational stability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Biochemical Research Methods
Michael A. Hope, Yuxuan Zhang, Amrit Venkatesh, Lyndon Emsley
Summary: Dynamic nuclear polarisation (DNP) using high-spin metal ions, such as Gd3+, can enhance nuclear magnetic resonance (NMR) sensitivity. Spin diffusion and metal site symmetry are factors affecting DNP efficiency. In this study, cubic In(OH)3 was investigated as a high-symmetry proton-containing material for DNP using endogenous Gd3+. A 1H enhancement of up to 9 was achieved, and the clustering of Gd3+ dopants and the local reduction in symmetry of the metal site induced by proton disorder were identified as the reasons for the enhancement. This is the first example of 1H DNP using Gd3+ dopants in an inorganic solid.
JOURNAL OF MAGNETIC RESONANCE
(2023)
Review
Chemistry, Multidisciplinary
Hong Zhang, Lukas Pfeifer, Shaik M. Zakeeruddin, Junhao Chu, Michael Gratzel
Summary: There is a global effort to advance perovskite solar cells through the development of new materials, processing methods, and passivation strategies. The use of organic passivators has been proven effective in reducing defects and enhancing the performance and stability of perovskite solar cells.
NATURE REVIEWS CHEMISTRY
(2023)
Review
Materials Science, Multidisciplinary
Thomas Baumeler, Amina A. A. Saleh, Tajamul A. A. Wani, Siming Huang, Xiaohan Jia, Xinyu Bai, Mojtaba Abdi-Jalebi, Neha Arora, Michael Gratzel, M. Ibrahim Dar
Summary: High power conversion efficiencies, low energy payback time, and low manufacturing costs make perovskite solar cells competitive. However, their operational stability is relatively low and degradation is induced by expensive materials used. Developing inexpensive alternatives, such as carbon-based electrodes and inorganic HTMs, is crucial for the commercialization of perovskite solar cells.
ACS MATERIALS LETTERS
(2023)
