Reconfiguring the band-edge states of photovoltaic perovskites by conjugated organic cations-Reference-Cited by-同舟云学术

Reconfiguring the band-edge states of photovoltaic perovskites by conjugated organic cations

Published:2021-02-05 Issue:6529 Volume:371 Page:636-640
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Xue Jingjing¹^ORCID,Wang Rui¹^ORCID,Chen Xihan²^ORCID,Yao Canglang³,Jin Xiaoyun⁴^ORCID,Wang Kai-Li⁵^ORCID,Huang Wenchao⁶^ORCID,Huang Tianyi¹^ORCID,Zhao Yepin¹^ORCID,Zhai Yaxin²^ORCID,Meng Dong¹^ORCID,Tan Shaun¹^ORCID,Liu Ruzhang⁴^ORCID,Wang Zhao-Kui⁵^ORCID,Zhu Chenhui⁷^ORCID,Zhu Kai²^ORCID,Beard Matthew C.²^ORCID,Yan Yanfa³^ORCID,Yang Yang¹^ORCID

Affiliation:

1. Department of Materials Science and Engineering and California NanoSystems Institute, University of California, Los Angeles, CA 90095, USA.

2. National Renewable Energy Laboratory, Golden, CO 80401, USA.

3. Department of Physics and Astronomy and Center for Photovoltaics Innovation and Commercialization, The University of Toledo, Toledo, OH 43606, USA.

4. School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225002, China.

5. Institute of Functional Nano & Soft Materials (FUNSOM), Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Soochow University, Suzhou 215123, China.

6. Department of Materials Science and Engineering, Monash University, Clayton, VIC, 3800, Australia.

7. Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.

Abstract

A-sites join the band edge The band edge of hybrid organic-inorganic perovskites, which have the general formula ABX 3 , is mainly controlled by the inorganic X anions (such as chloride) and the B cation (such as lead). Organic A-site cations usually only exert indirect structural effects because their electronic levels lie far from the band edge. Xue et al. show that cations with large π-conjugated structures can interact with inorganic frontier molecular orbitals. A surface layer of ethylammonium pyrene, which had an optimal intercalation distance, increased hole mobilities and power conversion efficiencies relative to a reference inorganic perovskite and also improved device stability. Science , this issue p. 636

Funder

National Natural Science Foundation of China

Priority Academic Program Development of Jiangsu Higher Education Institutions

Collaborative Innovation Center of Suzhou Nano Science and Technology

Department of Energy’s Office of Energy Efficiency and Renewable Energy

Center for Hybrid Organic Inorganic Semiconductors for Energy (CHOISE), an Energy Frontier Research Center funded by the DOE Office of Basic Energy Sciences

Australian Synchrotron, part of ANSTO

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference32 articles.

1. Unusual defect physics in CH3NH3PbI3 perovskite solar cell absorber

2. Intriguing Optoelectronic Properties of Metal Halide Perovskites

3. High-efficiency solution-processed perovskite solar cells with millimeter-scale grains

4. Organic–Inorganic Perovskites: Structural Versatility for Functional Materials Design

5. Lewis Acid–Base Adduct Approach for High Efficiency Perovskite Solar Cells

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