• Frontiers of Optoelectronics
  • Vol. 9, Issue 1, 81 (2016)
Yuanyuan ZHOU*, Hector F. GARCES, and Nitin P. PADTURE
Author Affiliations
  • School of Engineering, Brown University, Providence RI 02912, USA
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    Abstract

    The importance of methylammonium lead triiodide (CH3NH3PbI3 or 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.
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    Yuanyuan ZHOU, Hector F. GARCES, Nitin P. PADTURE. Challenges in the ambient Raman spectroscopy characterization of methylammonium lead triiodide perovskite thin films[J]. Frontiers of Optoelectronics, 2016, 9(1): 81
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    Category: RESEARCH ARTICLE
    Received: Dec. 17, 2015
    Accepted: Dec. 31, 2015
    Posted: Jan. 1, 2016
    Published Online: Oct. 21, 2016
    The Author Email: ZHOU Yuanyuan (yuanyuan_zhou@brown.edu)