Insight into the perovskite photoluminescence enhancement: Photoluminescence and electrical properties study

0487036 - FZÚ 2018 RIV FR eng A - Abstract
Hájková, Zdeňka - Ledinský, Martin - Holovský, Jakub - Schönfeldová, Tereza - Niesen, B. - Werner, J. - Ballif, C. - De Wolf, S. - Fejfar, Antonín
Insight into the perovskite photoluminescence enhancement: Photoluminescence and electrical properties study.
E-MRS Spring Meeting and Exhibit 2017- Book of abstracts. Strasbourg: E-MRS, 2017.
[E-MRS Spring Meeting and Exhibit 2017. 22.05.2017-26.05.2017, Strasbourg]
R&D Projects: GA MŠMT LM2015087; GA ČR GJ17-26041Y
Institutional support: RVO:68378271
Keywords : perovskites * photoluminescence
OECD category: Energy and fuels

We studied the photoluminescence (PL) enhancement of perovskite thin films by PL microscopy and compared the results with Fourier-transform photocurrent spectroscopy (FTPS) which was recently used to identify sharp absorption edge as the reason for the high material quality of perovskite films. In this study, we explore the absorption edge (defect density) and photo-current upon illumination. Surprisingly, even if the local electrical quality improves, the photo-current detected by FTPS decreases with illumination time. Furthermore, a microscopic model based on grain boundaries to explain the measured dependences is proposed.

Permanent Link: http://hdl.handle.net/11104/0281724