Publication

Light-Induced Halide Segregation in 2D and Quasi-2D Mixed-Halide Perovskites

Publications associées (32)

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The semiconducting hybrid-organic inorganic halide perovskites have excellent optical and electronic properties that attract the interest of scientists and researchers. Perovskite solar cells have seen the most rising-rate in the chart of solar cell effici ...
EPFL2021

Anion Exchange-Induced Crystal Engineering via Hot-Pressing Sublimation Affording Highly Efficient and Stable Perovskite Solar Cells

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Crystalline, dense, and uniform perovskite thin films are crucial for achieving high-power conversion efficiency solar cells. Herein, a universal method of fabricating highly crystalline and large-grain perovskite films via crystal engineering is demonstra ...
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Interfacial Engineering: The Key to Boost Perovskite Solar Cells Performance and Stability

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Perovskite solar cells (PSCs) based on metal halide materials have become the rising star in the photovoltaic (PV) field since the first discovery in 2009. A remarkable advance in this technology has been demonstrated by reaching a certified power conversi ...
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Dion-Jacobson and Ruddlesden-Popper double-phase 2D perovskites for solar cells

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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 ...
ELSEVIER2021

A combined molecular dynamics and experimental study of two-step process enabling low-temperature formation of phase-pure alpha-FAPbI3

Haizhou Lu, Paramvir Ahlawat, Essa Awadh R Alharbi

It is well established that the lack of understanding the crystallization process in a two-step sequential deposition has a direct impact on efficiency, stability, and reproducibility of perovskite solar cells. Here, we try to understand the solid-solid ph ...
2021

Proton-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 ...
2020

Structural properties of organometalic halide perovskite and their application in photodetectors

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Hybrid organometallic halide perovskites have been intensively investigated in the past years as highly efficient light harvesters for various optoelectronic applications for both sensing and emitting light. However, many open questions remain regarding th ...
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Formation and stabilization of all-inorganic perovskites for photovoltaics

Zaiwei Wang

All-inorganic perovskite films hold promise for improving stability of perovskite solar cells. However, the desirable narrow-bandgap inorganic perovskites (such as CsPbI3 and CsPbI2Br) are suffering from the thermodynamic phase instability, as the photoact ...
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Phase transitions, screening and dielectric response of CsPbBr3

Dominik Józef Kubicki

Cesium-lead-bromide (CsPbBr3) is the simplest all inorganic halide perovskite. It serves as a reference material for understanding the exceptional solar cell properties of the organic-inorganic hybrid halide perovskites and is itself discussed as an altern ...
ROYAL SOC CHEMISTRY2020

Intermediate Phase Enhances Inorganic Perovskite and Metal Oxide Interface for Efficient Photovoltaics

David Lyndon Emsley, Wolfgang Richard Tress, Yuhang Liu, Haizhou Lu, Ulf Anders Hagfeldt, Dominik Józef Kubicki, Jiahuan Zhang, Zaiwei Wang, Aditya Mishra, Claudia Esther Avalos, Brian Irving Carlsen, Wanchun Xiang, Anand Agarwalla, Mona Shasti, Ziyun Wang

Interfacial modification is crucial to fully develop the potential of semiconductor devices, including the revolutionary halide perovskite-based optoelectronics, such as photovoltaics, light-emitting diodes, and photodetectors. The all-inorganic halide per ...
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