Publication
Efficient and stable planar all-inorganic perovskite solar cells based on high-quality CsPbBr3 films with controllable morphology
Related publications (34)
Investigation of Lead-free perovskites for Optoelectronic Application
The search for new energy sources and materials is at the foundations of scientific and technological progress. These two, often interconnected, fundamental elements open a way to create novel designs and improve existing ones for all types of machines and ...
EPFL2021Dion-Jacobson and Ruddlesden-Popper double-phase 2D perovskites for solar cells
Yang Liu, Bowen Yang, Chen Li, Xin Guo, Sajjad Ahmad
Dion-Jacobson (DJ) phase and Ruddlesden-Popper phase 2D perovskites have been, individually, demonstrated to be more stable than 3D counterparts for perovskite solar cells (PSCs). In order to further improve the efficiency and stability of 2D PSCs, we here ...
ELSEVIER2021Proton-transfer-induced 3D/2D hybrid perovskites suppress ion migration and reduce luminance overshoot
Mohammad Khaja Nazeeruddin, Emad Oveisi, Hobeom Kim
Perovskite light-emitting diodes (PeLEDs) based on three-dimensional (3D) polycrystalline perovskites suffer from ion migration, which causes overshoot of luminance over time during operation and reduces its operational lifetime. Here, we demonstrate 3D/2D ...
2020Boosting the power conversion efficiency of perovskite solar cells to 17.7% with an indolo[3,2-b]carbazole dopant-free hole transporting material by improving its spatial configuration
Xiaoqing Jiang, Ulf Anders Hagfeldt
The development of facilely synthesized, dopant-free hole-transporting materials (HTMs) with high efficiency is of great significance for the potential application of perovskite solar cells (PSCs). Herein, we report two novel indolo[3,2-b]carbazole (ICZ) b ...
ROYAL SOC CHEMISTRY2019Atomic-Level Microstructure of Efficient Formamidinium-Based Perovskite Solar Cells Stabilized by 5-Ammonium Valeric Acid Iodide Revealed by Multinuclear and Two-Dimensional Solid-State NMR
Michael Graetzel, Shaik Mohammed Zakeeruddin, David Lyndon Emsley, Ursula Röthlisberger, Jacques-Edouard Moser, Fabrizio Giordano, Jovana Milic, Marko Mladenovic, Dominik Józef Kubicki, Dan Ren, Daniel Prochowicz, Marine Eva Fedora Bouduban, Essa Awadh R Alharbi, Anwar Qasem M Alanazi, Farzaneh Jahanbakhshi
Chemical doping of inorganic–organic hybrid perovskites is an effective way of improving the performance and operational stability of perovskite solar cells (PSCs). Here we use 5-ammonium valeric acid iodide (AVAI) to chemically stabilize the structure of ...
2019A chain is as strong as its weakest link - Stability study of MAPbI(3) under light and temperature
Michael Graetzel, Ulf Anders Hagfeldt, Michael Saliba, Pankaj Kumar Yadav, Amita Ummadisingu, Silver Hamill Turren Cruz, Philippe Jürgen Holzhey
The stability of perovskite solar cells is a key issue for industrial development. One reason for this is the volatile organic methylammonium (MA) cation, which is prone to degas under elevated temperatures from the perovskite. At the same time, small amou ...
2019Retarding Thermal Degradation in Hybrid Perovskites by Ionic Liquid Additives
Mohammad Khaja Nazeeruddin, Paul Joseph Dyson, Zhaofu Fei, Mounir Driss Mensi, Felix Daniel Bobbink, Cristina Roldán Carmona, Zhangjun Huang, Marius Franckevicius, Nikita Drigo, Rui Xia
Recent years have witnessed considerable progress in the development of solar cells based on lead halide perovskite materials. However, their intrinsic instability remains a limitation. In this context, the interplay between the thermal degradation and the ...
2019Indirect tail states formation by thermal-induced polar fluctuations in halide perovskites
Nripan Mathews, Qiang Xu, Bing Wu
Halide perovskites possess enormous potential for various optoelectronic applications. Presently, a clear understanding of the interplay between the lattice and electronic effects is still elusive. Specifically, the weakly absorbing tail states and dual em ...
Springer2019Molecular Engineering Towards High Efficiency Perovskite Solar Cells
High energy demands of our society stimulate the development of sustainable tech-nologies, such as those based on solar energy conversion or photovoltaics. Perovskite solar cells (PSCs) are an emerging photovoltaic technology that consist of the perov-skit ...
EPFL2018From Single-Crystals to High-Throughput
Perovskite solar cells have undergone increase in power-conversion efficiencies at an unprecedented pace. Since their emergence in academic research in 2009, thousands of scientific papers have been published on their unique properties, variations cell arc ...
EPFL2018