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Laser Processing Methods for Perovskite Solar Cells and Modules

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Palliating the efficiency loss due to shunting in perovskite/silicon tandem solar cells through modifying the resistive properties of the recombination junction

Christophe Ballif, Gabriel Christmann, Mathieu Gérard Boccard, Sylvain Nicolay

As the efficiency of commercial crystalline silicon solar cells approaches its maximum theoretical value, tandem architectures are becoming increasingly popular to continue the push to higher photovoltaic performances. Thin-film materials are particularly ...

2021

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A set of novel hole-transporting materials (HTMs) based on pi-extension through carbazole units was designed and synthesized via a facile synthetic procedure. The impact of isomeric structural linking on their optical, thermal, electrophysical, and photovo ...

AMER CHEMICAL SOC2020

All-in-One Deposition to Synergistically Manipulate Perovskite Growth for High-Performance Solar Cell

Jie Wu, Wei Huang, Hui Zhang

Nonradiative recombination losses originating from crystallographic distortions and issues occurring upon interface formation are detrimental for the photovoltaic performance of perovskite solar cells. Herein, we incorporated a series of carbamide molecule ...

2020

Laser engraving device for multiple laser beams

Andreas Schueler, Luc Burnier

The present invention concerns a laser engraving device (1) for engraving a target surface (17). The laser engraving device (1) comprises: a beam splitter (7) for dividing a processing laser beam (25) into a plurality of engraving laser beams (27); a first ...

2020

Template-Assisted Formation of High-Quality alpha-Phase HC(NH2)(2)PbI3 Perovskite Solar Cells

Mohammad Khaja Nazeeruddin, Yong Ding, Xuehui Liu, Cheng Liu

Formamidinium (FA) lead halide (alpha-FAPbI(3)) perovskites are promising materials for photovoltaic applications because of their excellent light harvesting capability (absorption edge 840 nm) and long carrier diffusion length. However, it is extremely di ...

2019

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This invention relates to an optoelectronic and/or photovoltaic device comprising acompound used as crystal defect mitigating agent or passivating agent, said compound beingselected from a compound of formula (I),a compound of formula (II),a mixture thereo ...

2019

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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 ...

Springer2019

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

Selective 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 ...

2018

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 ...

EPFL2018