Publication
The synergistic effect of H2O and DMF towards stable and 20% efficiency inverted perovskite solar cells
Publications associées (32)
Ligand-Modulated Excess PbI2 Nanosheets for Highly Efficient and Stable Perovskite Solar Cells
Ulf Anders Hagfeldt, Jingshan Luo, Chenyi Yi, Zaiwei Wang, Xiaoyu Zhang, Yi Ding, Zhen Yang
Excess lead iodide (PbI2), as a defect passivation material in perovskite films, contributes to the longer carrier lifetime and reduced halide vacancies for high-efficiency perovskite solar cells. However, the random distribution of excess PbI2 also leads ...
WILEY-V C H VERLAG GMBH2020Auto-passivation of crystal defects in hybrid imidazolium/methylammonium lead iodide films by fumigation with methylamine affords high efficiency perovskite solar cells
Mohammad Khaja Nazeeruddin, Yi Zhang, Paul Joseph Dyson, Rosario Scopelliti, Zhaofu Fei, Farzaneh Fadaei Tirani, Emad Oveisi, Giulia Grancini, Xuehui Liu, Erfan Shirzadi
Hybrid perovskite solar cells have attracted tremendous interest in the photovoltaic community. Despite their high defect tolerance, reducing the trap density by material engineering and surface modification is still critical to further boost performance. ...
2019Engineering of Perovskite Materials Based on Formamidinium and Cesium Hybridization for High-Efficiency Solar Cells
Shaik Mohammed Zakeeruddin, Dominik Józef Kubicki, Pankaj Kumar Yadav, Daniel Prochowicz, Mohammad Mahdi Tavakoli, Anwar Qasem M Alanazi, Rashmi Runjhun
Engineering the chemical composition of inorganic-organic hybrid perovskite materials is an effective strategy to boost the performance and operational stability of perovskite solar cells (PSCs). Among the diverse family of ABX(3) perovskites, methylammoni ...
AMER CHEMICAL SOC2019Fundamentals of perovskite formation for photovoltaics
Perovskite solar cells have become strong contenders in the arena of photovoltaics due to the stunning rise in their efficiency from 3 % to over 20 % in just seven years. In this time, numerous device architectures and thin film deposition methods have bee ...
EPFL2018Selective growth of layered perovskites for stable and efficient photovoltaics
Mohammad Khaja Nazeeruddin, Emad Oveisi, Pascal Alexander Schouwink, Sanghyun Paek, Giulia Grancini, Yonghui Lee, Kyung Taek Cho, Manuel Tschumi
Perovskite solar cells (PSCs) are promising alternatives toward clean energy because of their high-power conversion efficiency (PCE) and low materials and processing cost. However, their poor stability under operation still limits their practical applicati ...
2018Elucidating the role of chlorine in perovskite solar cells
Gang Wang, Ulf Anders Hagfeldt, Jingshan Luo, Xiaoyu Zhang, Yi Ding, Di Zhang, Li Fan
It has been proposed that introducing the chlorine anion into a CH3NH3PbI3 perovskite material can substantially improve the materials properties as well as the solar cell performance. To elucidate the role of chlorine in perovskite solar cells (PSCs), her ...
Royal Society of Chemistry2017Investigations on hybrid organic-inorganic perovskites for high performance solar cells
Undoubtedly, perovskite solar cells have become a key player in 3rd generation photovoltaics over the last few years. Although it is only in 2012 that the first solid state perovskite solar cell was reported, power conversion efficiencies have increased so ...
EPFL2017Perovskite Solar Cells on the Way to Their Radiative Efficiency Limit - Insights Into a Success Story of High Open-Circuit Voltage and Low Recombination
Inorganic-organic lead-halide perovskite solar cells have reached efficiencies above 22% within a few years of research. Achieved photovoltages of >1.2 V are outstanding for a material with a bandgap of 1.6 eV - in particular considering that it is solutio ...
Wiley-V C H Verlag Gmbh2017High photovoltage in perovskite solar cells: New physical insights from the ultrafast transient absorption spectroscopy
Shaik Mohammed Zakeeruddin, Mohammad Ibrahim Dar, Neha Arora, Marius Franckevicius
To understand the cause of the high open circuit photovoltage (VOC) achieved by todays' state of the art perovskite solar cells (PSCs), we examine formamidinium lead bromide CH(NH2)(2)PbBr3 films by ultrafast transient absorption spectroscopy (TAS). By usi ...
Elsevier2017Effect of Selective Contacts on the Thermal Stability of Perovskite Solar Cells
Thermal stability of CH3NH3PbT3 (MAPbI(3))based perovskite solar cells was investigated for normal structure including the mesoporous TiO2 layer and spiro-MeOTAD and the inverted structure with PCBM and NiO. MAPbI(3) was found to be intrinsically stable fr ...
Amer Chemical Soc2017