Unravelling the Behavior of Dion-Jacobson Layered Hybrid Perovskites in Humid Environments

被引：62

作者：

Ducinskas, Algirdas ^{[1
,2
]}

Kim, Gee Yeong ^{[2
]}

Moia, Davide ^{[2
]}

Senocrate, Alessandro ^{[2
]}

Wang, Ya-Ru ^{[2
]}

Hope, Michael A. ^{[3
]}

Mishra, Aditya ^{[3
]}

Kubicki, Dominik J. ^{[4
]}

Siczek, Milosz ^{[5
]}

Bury, Wojciech ^{[5
]}

Schneeberger, Thomas ^{[1
]}

Emsley, Lyndon ^{[3
]}

Maier, Joachim ^{[2
]}

Milic, Jovana, V ^{[1
,6
]}

Gratzel, Michael ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland

[2] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[3] Ecole Polytech Fed Lausanne, Lab Magnet Resonance, CH-1015 Lausanne, Switzerland

[4] Univ Cambridge, Cavendish Lab, Cambridge CB3 0HE, England

[5] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland

[6] Univ Fribourg, Adolphe Merkle Inst, CH-1700 Fribourg, Switzerland

来源：

ACS ENERGY LETTERS | 2021年 / 6卷 / 02期

基金：

欧盟地平线“2020”;

关键词：

ORGANIC-INORGANIC PEROVSKITES; LEAD IODIDE PEROVSKITES; HALIDE PEROVSKITES; STABILITY; FILMS;

D O I：

10.1021/acsenergylett.0c02344

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Layered hybrid halide perovskites are known to be more environmentally stable than their 3D analogues. The enhanced stability is particularly relevant for Dion-Jacobson-type layered perovskites due to their promising photovoltaic performances. However, in contrast to the expected resilience to moisture, we reveal that the structure of Dion-Jacobson perovskite phases based on a 1,4-phenylenedimethanammonium spacer is disrupted in humid conditions using X-ray diffraction, UV-vis spectroscopy, thermogravimetric analysis, and solid-state NMR spectroscopy. The process takes place at >= 65 +/- 5% relative humidity, with a time scale on the order of minutes. The original layered structure can be restored upon annealing and the hydration can be suppressed by postsynthetic annealing in air, which is attributed to the generation of a self-protective layer of PbI2. This study thereby reveals a unique behavior of layered perovskites in humid environments, which is critical to their stabilizing role in perovskite devices.

引用

页码：337 / 344

页数：8

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