Publication result detail
Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites
GAVRANOVIĆ, S.; ZMEŠKAL, O.; WEITER, M.; POSPÍŠIL, J.
Original Title
Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites
English Title
Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites
Type
WoS Article
Original Abstract
Understanding how charge carriers behave in semiconductors is key to improving next-generation optoelectronic devices. Here we introduce an advanced space-charge-limited current model that enables detailed extraction of mobility, charge carrier concentrations, and Fermi level position from voltage- and energy-dependent analysis. Applying this model to two promising halide perovskites, methylammonium lead bromide and methylammonium lead iodide, we observe a strong photoresponse, with significant increases in microscopic mobility and free carrier density under illumination. Interestingly, the behavior of trapped charges and Fermi level shifts differs between the two materials, revealing distinct transport mechanisms. This model offers a powerful tool for characterizing semiconductors and could accelerate the development of more efficient light-sensitive devices.
English abstract
Understanding how charge carriers behave in semiconductors is key to improving next-generation optoelectronic devices. Here we introduce an advanced space-charge-limited current model that enables detailed extraction of mobility, charge carrier concentrations, and Fermi level position from voltage- and energy-dependent analysis. Applying this model to two promising halide perovskites, methylammonium lead bromide and methylammonium lead iodide, we observe a strong photoresponse, with significant increases in microscopic mobility and free carrier density under illumination. Interestingly, the behavior of trapped charges and Fermi level shifts differs between the two materials, revealing distinct transport mechanisms. This model offers a powerful tool for characterizing semiconductors and could accelerate the development of more efficient light-sensitive devices.
Keywords
bulk trap spectroscopy; carrier mobility;performance;lengths;solids;TMSCLC
Key words in English
bulk trap spectroscopy; carrier mobility;performance;lengths;solids;TMSCLC
Authors
GAVRANOVIĆ, S.; ZMEŠKAL, O.; WEITER, M.; POSPÍŠIL, J.
Released
04.07.2025
Publisher
NATURE PORTFOLIO
Location
BERLIN
ISBN
2399-3650
Periodical
Communications Physics
Volume
8
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
1
Pages to
10
Pages count
10
URL
Full text in the Digital Library
BibTex
@article{BUT198537,
author="Stevan {Gavranović} and Oldřich {Zmeškal} and Martin {Weiter} and Jan {Pospíšil}",
title="Advanced space-charge-limited current model for analyzing fermi level shift in the bandgap of halide perovskites",
journal="Communications Physics",
year="2025",
volume="8",
number="1",
pages="1--10",
doi="10.1038/s42005-025-02202-1",
url="https://www.nature.com/articles/s42005-025-02202-1"
}Documents