Temperature dependence of the urbach energy in lead iodide perovskites

Ledinský, Martin; Schönfeldová, Tereza; Holovský, Jakub; Aydin, E.; Hájková, Zdeňka; Landová, Lucie; Neykova, Neda; Fejfar, Antonín; De Wolf, S.

doi:https://dx.doi.org/10.1021/acs.jpclett.9b00138

Number of the records: 1

Temperature dependence of the urbach energy in lead iodide perovskites

1.

SYSNO ASEP	0520320
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Temperature dependence of the urbach energy in lead iodide perovskites
Author(s)	Ledinský, Martin (FZU-D)_{RID, ORCID, SAI} Schönfeldová, Tereza (FZU-D) Holovský, Jakub (FZU-D)_{RID, ORCID} Aydin, E. (SA) Hájková, Zdeňka (FZU-D)_{RID, ORCID} Landová, Lucie (FZU-D)_ORCID Neykova, Neda (FZU-D)_{RID, ORCID} Fejfar, Antonín (FZU-D)_{RID, ORCID, SAI} De Wolf, S. (SA)
Number of authors	9
Source Title	Journal of Physical Chemistry Letters. - : American Chemical Society - ISSN 1948-7185 Roč. 10, č. 6 (2019), s. 1368-1373
Number of pages	6 s.
Language	eng - English
Country	US - United States
Keywords	optical-absorption edge ; solar-cells ; photocurrent spectroscopy ; electronic-structure ; halide perovskites ; disorder limit
Subject RIV	BM - Solid Matter Physics ; Magnetism
OECD category	Condensed matter physics (including formerly solid state physics, supercond.)
R&D Projects	EF16_019/0000760 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
	GJ17-26041Y GA ČR - Czech Science Foundation (CSF)
Method of publishing	Limited access
Institutional support	FZU-D - RVO:68378271
UT WOS	000463678800032
EID SCOPUS	85063131062
DOI	10.1021/acs.jpclett.9b00138
Annotation	To gain insight into the properties of photovoltaic and light-emitting materials, detailed information about their optical absorption spectra is essential. Here, we elucidate the temperature dependence of such spectra for methylammonium lead iodide (CH3NH3PbI3), with specific attention to its sub-band gap absorption edge (often termed Urbach energy). On the basis of these data, we first find clear further evidence for the universality of the correlation between the Urbach energy and open-circuit voltage losses of solar cells. Second, we find that for CH3NH3PbI3 the static, temperature-independent, contribution of the Urbach energy is 3.8 ± 0.7 meV, which is smaller than that of crystalline silicon (Si), gallium arsenide (GaAs), indium phosphide (InP), or gallium nitride (GaN), underlining the remarkable optoelectronic properties of perovskites.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2020
Electronic address	https://doi.org/10.1021/acs.jpclett.9b00138

Number of the records: 1