Millisecond-Scale Charge-Carrier Recombination Dynamics in the CsPbBr₃ Perovskite

Author(s)

András Bojtor, Dávid Krisztián, Ferenc Korsós, Sándor Kollarics, Gábor Paráda, Thomas Pinel, Márton Kollár, Endre Horváth, Xavier Mettan, Hidetsugu Shiozawa, Bence G. Márkus, László Forró, Ferenc Simon

Abstract

Understanding the recombination lifetime of charge carriers ((Formula presented.)) is essential for the diverse applications of photovoltaic materials, such as perovskites. The study on the inorganic perovskite, CsPbBr3, reveals recombination dynamics exceeding 1 ms below 200 K and (Formula presented.) approaching 100 μs at room temperature. Utilizing time-resolved microwave-detected photoconductivity decay in conjunction with injection dependence, it is found that (Formula presented.) is dominated by impurity charge trapping. The observed injection dependence is well corroborated by modeling of the trap mechanism. The ultralong decay time is also consistent with photoconductivity measurements with a continuous-wave excitation at powers corresponding to around 1 Sun irradiation. While charge-carrier trapping may, in theory, impose limitations on the photovoltaic efficiency of single-cell devices, it can also contribute to increased efficiency in tandem cells and find applications in photodetection, photocatalysis, and quantum information storage.

Organisation(s)

Electronic Properties of Materials

External organisation(s)

Budapest University of Technology and Economics, Semilab Co. Ltd., HUN-REN Hungarian Research Network, CIMAP - Centre de recherche sur les Ions, les MAtériaux et la Photonique, KEP Innovation Center, Czech Academy of Sciences, University of Notre Dame

Journal

Advanced Energy and Sustainability Research

Volume

5

No. of pages

11

DOI

https://doi.org/10.1002/aesr.202400043

Publication date

09-2024

Peer reviewed

Yes

Austrian Fields of Science 2012

103009 Solid state physics, 103018 Materials physics, 103020 Surface physics

Keywords

ASJC Scopus subject areas

Energy Engineering and Power Technology, Ecology, Waste Management and Disposal, Environmental Science (miscellaneous)

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Portal url

https://ucrisportal.univie.ac.at/en/publications/bba1ef23-85b2-4072-a05e-fe7570afd716