Nanoscale Phase Segregation in Supramolecular π-Templating for Hybrid Perovskite Photovoltaics from NMR Crystallography | Zendy

Michael A. Hope | Zendy; Toru Nakamura | Zendy; Paramvir Ahlawat | Zendy; Aditya Mishra | Zendy; Manuel Cordova | Zendy; Farzaneh Jahanbakhshi | Zendy; Marko Mladenović | Zendy; Rashmi Runjhun | Zendy; Lena Merten | Zendy; Alexander Hinderhofer | Zendy; Brian Carlsen | Zendy; Dominik J. Kubicki | Zendy; Renana GershoniPoranne | Zendy; Thomas Schneeberger | Zendy; Loï C. Carbone | Zendy; Yuhang Liu | Zendy; Shaik M. Zakeeruddin | Zendy; Janusz Lewiński | Zendy; Anders Hagfeldt | Zendy; Frank Schreiber | Zendy; Ursula Röthlisberger | Zendy; Michaël Grätzel | Zendy; Jovana V. Milić | Zendy; Lyndon Emsley | Zendy

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Nanoscale Phase Segregation in Supramolecular π-Templating for Hybrid Perovskite Photovoltaics from NMR Crystallography

Author(s) -

Michael A. Hope,

Toru Nakamura,

Paramvir Ahlawat,

Aditya Mishra,

Manuel Cordova,

Farzaneh Jahanbakhshi,

Marko Mladenović,

Rashmi Runjhun,

Lena Merten,

Alexander Hinderhofer,

Brian Carlsen,

Dominik J. Kubicki,

Renana GershoniPoranne,

Thomas Schneeberger,

Loï C. Carbone,

Yuhang Liu,

Shaik M. Zakeeruddin,

Janusz Lewiński,

Anders Hagfeldt,

Frank Schreiber,

Ursula Röthlisberger,

Michaël Grätzel,

Jovana V. Milić,

Lyndon Emsley

Publication year - 2021

Publication title -

journal of the american chemical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 7.115

H-Index - 612

eISSN - 1520-5126

pISSN - 0002-7863

DOI - 10.1021/jacs.0c11563

Subject(s) - chemistry , perovskite (structure) , nanoscopic scale , supramolecular chemistry , phase (matter) , photovoltaics , nanotechnology , diffraction , crystallography , crystal structure , materials science , photovoltaic system , organic chemistry , ecology , physics , optics , biology

The use of layered perovskites is an important strategy to improve the stability of hybrid perovskite materials and their optoelectronic devices. However, tailoring their properties requires accurate structure determination at the atomic scale, which is a challenge for conventional diffraction-based techniques. We demonstrate the use of nuclear magnetic resonance (NMR) crystallography in determining the structure of layered hybrid perovskites for a mixed-spacer model composed of 2-phenylethylammonium (PEA + ) and 2-(perfluorophenyl)ethylammonium (FEA + ) moieties, revealing nanoscale phase segregation. Moreover, we illustrate the application of this structure in perovskite solar cells with power conversion efficiencies that exceed 21%, accompanied by enhanced operational stability.

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