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Title: Optical Properties of Two-Dimensional Perovskite Films of (C 6H 5C 2H 4NH 3) 2[PbI 4] and (C 6H 5C 2H 4NH 3) 2(CH 3NH 3) 2[Pb 3I 10]

Abstract

The temperature dependence of absorption and photoluminescence (PL) spectroscopies were used to study the optical properties of 2D perovskite films, including n = 1 and 3 of (PEA) 2(CH 3NH 3) n-1[Pb nI 3n+1] (PEA = C 6H 5(CH 2) 2NH 3). In (PEA) 2[Pb 1I 4] (PEPI), excitons coupling to optical phonons with an average energy of ~30 meV dominate the photophysics of absorption and PL. (PEA) 2(CH 3NH 3) 2[Pb 3I 10] (shortened as PMPI 3), nominally prepared as n = 3, actually was a mixture of multiple layered perovskites with various n. In absorption, a PMPI 3 film presents respective n materials' excitonic features, coupling to phonons with an average energy of ~30 meV; in analyzing PL peaked singly at ~1.6 eV and its width as a function of temperature, we found that PMPI 3 behaves like PEPI at around 80 K but like 3D perovskite near room temperature, with three times larger electron-phonon interaction strength compared to that in PEPI.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [2];  [3];  [1]
  1. Nanjing Univ. of Science and Technology, Nanjing (China)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  3. Chinese Academy of Sciences (CAS), Beijing (China). Inst. of Chemistry
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
1493477
Report Number(s):
NREL/JA-5900-73217
Journal ID: ISSN 1948-7185
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Physical Chemistry Letters
Additional Journal Information:
Journal Volume: 10; Journal Issue: 1; Journal ID: ISSN 1948-7185
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; perovskite films; optical properties; temperature dependence; absorption; photoluminescence

Citation Formats

Zhang, Yang, Wang, Ruizhi, Li, Yezhou, Wang, Zeyang, Hu, Shu, Yan, Xiaoliang, Zhai, Yaxin, Zhang, Chuang, and Sheng, ChuanXiang. Optical Properties of Two-Dimensional Perovskite Films of (C6H5C2H4NH3)2[PbI4] and (C6H5C2H4NH3)2(CH3NH3)2[Pb3I10]. United States: N. p., 2018. Web. doi:10.1021/acs.jpclett.8b03458.
Zhang, Yang, Wang, Ruizhi, Li, Yezhou, Wang, Zeyang, Hu, Shu, Yan, Xiaoliang, Zhai, Yaxin, Zhang, Chuang, & Sheng, ChuanXiang. Optical Properties of Two-Dimensional Perovskite Films of (C6H5C2H4NH3)2[PbI4] and (C6H5C2H4NH3)2(CH3NH3)2[Pb3I10]. United States. doi:10.1021/acs.jpclett.8b03458.
Zhang, Yang, Wang, Ruizhi, Li, Yezhou, Wang, Zeyang, Hu, Shu, Yan, Xiaoliang, Zhai, Yaxin, Zhang, Chuang, and Sheng, ChuanXiang. Mon . "Optical Properties of Two-Dimensional Perovskite Films of (C6H5C2H4NH3)2[PbI4] and (C6H5C2H4NH3)2(CH3NH3)2[Pb3I10]". United States. doi:10.1021/acs.jpclett.8b03458.
@article{osti_1493477,
title = {Optical Properties of Two-Dimensional Perovskite Films of (C6H5C2H4NH3)2[PbI4] and (C6H5C2H4NH3)2(CH3NH3)2[Pb3I10]},
author = {Zhang, Yang and Wang, Ruizhi and Li, Yezhou and Wang, Zeyang and Hu, Shu and Yan, Xiaoliang and Zhai, Yaxin and Zhang, Chuang and Sheng, ChuanXiang},
abstractNote = {The temperature dependence of absorption and photoluminescence (PL) spectroscopies were used to study the optical properties of 2D perovskite films, including n = 1 and 3 of (PEA)2(CH3NH3)n-1[PbnI3n+1] (PEA = C6H5(CH2)2NH3). In (PEA)2[Pb1I4] (PEPI), excitons coupling to optical phonons with an average energy of ~30 meV dominate the photophysics of absorption and PL. (PEA)2(CH3NH3)2[Pb3I10] (shortened as PMPI3), nominally prepared as n = 3, actually was a mixture of multiple layered perovskites with various n. In absorption, a PMPI3 film presents respective n materials' excitonic features, coupling to phonons with an average energy of ~30 meV; in analyzing PL peaked singly at ~1.6 eV and its width as a function of temperature, we found that PMPI3 behaves like PEPI at around 80 K but like 3D perovskite near room temperature, with three times larger electron-phonon interaction strength compared to that in PEPI.},
doi = {10.1021/acs.jpclett.8b03458},
journal = {Journal of Physical Chemistry Letters},
number = 1,
volume = 10,
place = {United States},
year = {2018},
month = {12}
}

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This content will become publicly available on December 17, 2019
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