Jeong-Hyeok Im | EPFL Graph Search

Bifunctional Organic Spacers for Formamidinium-Based Hybrid Dion-Jacobson Two-Dimensional Perovskite Solar Cells

Shaik Mohammed Zakeeruddin, Jovana Milic, Yuhang Liu, Ulf Anders Hagfeldt, Mohammad Ibrahim Dar, Peng Wang, Yang Li, Jiyoun Seo, Amita Ummadisingu, Jeong-Hyeok Im

Three-dimensional (3D) perovskite materials display remarkable potential in photovoltaics owing to their superior solar-to-electric power conversion efficiency, with current efforts focused on improving stability. Two-dimensional (2D) perovskite analogues ...

AMER CHEMICAL SOC2019

Supramolecular Engineering for Formamidinium-Based Layered 2D Perovskite Solar Cells: Structural Complexity and Dynamics Revealed by Solid-State NMR Spectroscopy

Michael Graetzel, Shaik Mohammed Zakeeruddin, David Lyndon Emsley, Jovana Milic, Mohammad Ibrahim Dar, Dominik Józef Kubicki, Yang Li, Jiyoun Seo, Amita Ummadisingu, Jeong-Hyeok Im, Marco Alejandro Ruiz Preciado

Perovskite solar cells are one of the most promising photovoltaic technologies, although their molecular level design and stability toward environmental factors remain a challenge. Layered 2D Ruddlesden-Popper perovskite phases feature an organic spacer bi ...

WILEY-V C H VERLAG GMBH2019

Perovskite devices, especially photodetectors, and their fabrication, operation, and devices using them

Michael Graetzel, Mohammad Khaja Nazeeruddin, Thomas Moehl, Konrad Domanski, Jeong-Hyeok Im

Devices for room temp. reverse-bias operation photodetection comprising a planar first electrode; a second electrode above the first electrode; and an active region sandwiched between the first and second electrode are described in which the active region ...

2016

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