Optical Properties of Two-Dimensional Perovskite Films of (C6H5C2H4NH3)2[PbI4] and (C6H5C2H4NH3)2(CH3NH3)2[Pb3I10]
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(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.
- Authors:
-
- Nanjing Univ. of Science and Technology, Nanjing (China)
- National Renewable Energy Lab. (NREL), Golden, CO (United States)
- 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. https://doi.org/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. https://doi.org/10.1021/acs.jpclett.8b03458. https://www.osti.gov/servlets/purl/1493477.
@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 = {Mon Dec 17 00:00:00 EST 2018},
month = {Mon Dec 17 00:00:00 EST 2018}
}
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