Moisture‐Tailored 2D Dion–Jacobson Perovskites for Reconfigurable Optoelectronics

Author:

Guan Mengyu1,Xie Yunlong2,Zhang Yang3,Gu Zixin1,Qiu Lei1,He Zhuojie1,Ye Bingkun1,Suwardi Ady4,Dai Zhigao15ORCID,Li Guogang16,Hu Guangwei7ORCID

Affiliation:

1. Faculty of Materials Science and Chemistry China University of Geosciences Wuhan 430074 P. R. China

2. Institute for Advanced Materials Hubei Normal University Huangshi 435002 P. R. China

3. School of Materials Science and Engineering Center of Advanced Analysis & Gene Sequencing Zhengzhou University Zhengzhou 450001 P. R. China

4. Institute of Materials Research and Engineering (IMRE) A*STAR (Agency for Science, Technology and Research) 2 Fusionopolis Way Singapore 138634 Singapore

5. Shenzhen Research Institute China University of Geosciences Shenzhen 518063 P. R. China

6. Zhejiang Institute China University of Geosciences Hangzhou 311305 P. R. China

7. School of Electrical and Electronic Engineering Nanyang Technological University 50 Nanyang Avenue Singapore 639798 Singapore

Abstract

AbstractHumidity‐ and moisture‐induced degradation has been a longstanding problem in perovskite materials, affecting their long‐term stability during applications. Counterintuitively, the moisture is leveraged to tailor the reversible hydrochromic behaviors of a new series of 2D Dion–Jacobson (DJ) perovskites for reconfigurable optoelectronics. In particular, the hydrogen bonds between organic cations and water molecules can be dynamically modulated via moisture removal/exposure. Remarkably, such modulation confines the movement of the organic cations close to the original position, preventing their escape from crystal lattices. Furthermore, this mechanism is elucidated by theoretical analysis using first‐principles calculations and confirmed with the experimental characterizations. The reversible fluorescent transition 2D DJ perovskites show excellent cyclical properties, presenting untapped opportunities for reconfigurable optoelectronic applications. As a proof‐of‐concept demonstration, an anti‐counterfeiting display is shown based on patterned reversible 2D DJ perovskites. The results represent a new avenue of reconfigurable optoelectronic application with 2D DJ perovskites for humidity detection, anti‐counterfeiting, sensing, and other emerging photoelectric intelligent technologies.

Funder

National Natural Science Foundation of China

Fundamental Research Funds for the Central Universities

Natural Science Foundation of Guangdong Province

Natural Science Foundation of Zhejiang Province

Natural Science Foundation of Hubei Province

Publisher

Wiley

Subject

Mechanical Engineering,Mechanics of Materials,General Materials Science

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