Challenges in the ambient Raman spectroscopy characterization of methylammonium lead triiodide perovskite thin films

The importance triiodide （CH3NH3PbI3 or of methylammonium lead MAPbI3） organic-inorganic hybrid perovskites has shot up dramatically since their use in highly efficient thin-film perovskite solar cells （PSCs）. However, the basic structural characterization of these fascinating materials remains spar...

Full description

Saved in:
Bibliographic Details
Published inFrontiers of Optoelectronics (Online) Vol. 9; no. 1; pp. 81 - 86
Main Authors Zhou, Yuanyuan, Garces, Hector F., Padture, Nitin P.
Format Journal Article
LanguageEnglish
Published Beijing Higher Education Press 01.03.2016
Subjects
Biomedical Engineering and Bioengineering
Electrical Engineering
Engineering
Physics
Research Article
光谱表征
太阳能电池
拉曼光谱
有机-无机杂化
环境
碘化铅
薄膜
钙钛矿
perovskite
solar cells
laser-degradation
Raman spectroscopy
Online AccessGet full text

Cover

More Information
Summary:The importance triiodide （CH3NH3PbI3 or of methylammonium lead MAPbI3） organic-inorganic hybrid perovskites has shot up dramatically since their use in highly efficient thin-film perovskite solar cells （PSCs）. However, the basic structural characterization of these fascinating materials remains sparse. In particular, Raman spectroscopy, which is a powerful vibrational spectroscopy characterization tool and complements other characterization methods, of MAPbI3 under ambient conditions is plagued with difficulties. Here, a systematic ambient Raman spectroscopy characterization study of MAPbI3 thin films is conducted under different conditions （excitation laser wavelength, integration time, filter characteristic）. The results from this study help elucidate the possible sources of artifacts in the Raman spectra, and raise the awareness of the challenges in the ambient Raman spectroscopy of MAPbI3 perovskites. Approaches to overcome these challenges are suggested.
Bibliography:The importance triiodide （CH3NH3PbI3 or of methylammonium lead MAPbI3） organic-inorganic hybrid perovskites has shot up dramatically since their use in highly efficient thin-film perovskite solar cells （PSCs）. However, the basic structural characterization of these fascinating materials remains sparse. In particular, Raman spectroscopy, which is a powerful vibrational spectroscopy characterization tool and complements other characterization methods, of MAPbI3 under ambient conditions is plagued with difficulties. Here, a systematic ambient Raman spectroscopy characterization study of MAPbI3 thin films is conducted under different conditions （excitation laser wavelength, integration time, filter characteristic）. The results from this study help elucidate the possible sources of artifacts in the Raman spectra, and raise the awareness of the challenges in the ambient Raman spectroscopy of MAPbI3 perovskites. Approaches to overcome these challenges are suggested.
perovskite, solar cells, Raman spectroscopy,laser-degradation
11-5738/TN
ISSN:2095-2759
2095-2767
DOI:10.1007/s12200-016-0573-8