Publication
Revealing fundamentals of charge extraction in photovoltaic devices through potentiostatic photoluminescence imaging
Publications associées (71)
Effect of Thermal Cycling on the Structural Evolution of Methylammonium Lead Iodide Monitored around the Phase Transition Temperatures
László Forró, Endre Horvath, Alla Arakcheeva, Gaétan Charles Antoine Giriat, Anastasiia Glushkova, Konstantins Mantulnikovs, Konstantin Semeniuk
Optoelectronic devices and solar cells based on organometallic hybrid perovskites have to operate over a broad temperature range, which may contain their structural phase transitions. For instance, the temperature of 330 K, associated with the tetragonal-c ...
WILEY-V C H VERLAG GMBH2019Auto-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. ...
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 ...
2019Strategic advantages of reactive polyiodide melts for scalable perovskite photovoltaics
Michael Graetzel, Andrey Petrov
Despite tremendous progress in efficiency and stability, perovskite solar cells are still facing the challenge of upscaling. Here we present unique advantages of reactive polyiodide melts for solvent- and adduct-free reactionary fabrication of perovskite f ...
NATURE PUBLISHING GROUP2019Flash infrared annealing as a cost-effective and low environmental impact processing method for planar perovskite solar cells
Sandy Sanchez Alonso, Michael Saliba
For successful commercialization of perovskite solar cells, straightforward solutions in terms of environmental impact and economic feasibility are still required. Flash Infrared Annealing (FIRA) is a rapid method to fabricate perovskite solar cells with e ...
ELSEVIER SCI LTD2019Power output stabilizing feature in perovskite solar cells at operating condition: Selective contact-dependent charge recombination dynamics
Shaik Mohammed Zakeeruddin, Ulf Anders Hagfeldt, Jiyoun Seo, Hui-Seon Kim, Seckin Akin
Stabilized power output at maximum power point (mpp) has been considered as one of the most reliable parameters as it provides a key performance indicator for perovskite solar cells (PSCs) revealing the operational stability of the photovoltaic device. Her ...
ELSEVIER SCIENCE BV2019Computational studies of the structural and optical properties of organic-inorganic lead halide perovskites.
The rapid rise of organic-inorganic lead halide perovskites has amazed the photovoltaic community. As the efficiency race continues for this revolutionary class of light-harvesting materials, many questions on the structural, electronic and optical propert ...
EPFL2019Electron-Affinity-Triggered Variations on the Optical and Electrical Properties of Dye Molecules Enabling Highly Efficient Dye-Sensitized Solar Cells
Michael Graetzel, Shaik Mohammed Zakeeruddin, Yuhang Liu, Ulf Anders Hagfeldt, Péter Kalman Péchy, Mohammad Ibrahim Dar, Yiming Cao, Yasemin Saygili, Weiwei Zhang, Marko Stojanovic
The synthesis, characterization, and photovoltaic performance of a series of indacenodithiophene (IDT)-based D--A organic dyes with varying electron-accepting units is presented. By control of the electron affinity, perfectly matching energy levels were ac ...
WILEY-V C H VERLAG GMBH2018Novel p-dopant toward highly efficient and stable perovskite solar cells
Michael Graetzel, Shaik Mohammed Zakeeruddin, Ulf Anders Hagfeldt, Jiyoun Seo, Hui-Seon Kim, Seckin Akin, Marko Stojanovic
Li-TFSI is the most common p-dopant for the hole conductor spiro-MeOTAD in the normal structure (n-i-p) of perovskite solar cells (PSCs), which consistently yield the highest power conversion efficiency (PCE) albeit at the risk of lower long-term operation ...
ROYAL SOC CHEMISTRY2018Fundamentals 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 ...
EPFL2018