Journal Article

FZJ-2022-03247

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Intensity Modulated Photocurrent Microspectrosopy for Next Generation Photovoltaics

Laird, J. S. (Corresponding author) ; Ravishankar, S.FZJ* ; Rietwyk, K. J. ; Mao, W. ; Bach, U. ; Smith, T. A.

2022
WILEY-VCH Verlag GmbH & Co. KGaA Weinheim

This record in other databases:      

Please use a persistent id in citations: http://hdl.handle.net/2128/32137  doi:10.1002/smtd.202200493

Abstract: In this report, a large-area laser beam induced current microscope that has been adapted to perform intensity modulated photocurrent spectroscopy (IMPS) in an imaging mode is described. Microscopy-based IMPS method provides a spatial resolution of the frequency domain response of the solar cell, allowing correlation of the optoelectronic response with a particular interface, bulk material, specific transport layer, or transport parameter. The system is applied to study degradation effects in back-contact perovskite cells where it is found to readily differentiate areas based on their markedly different frequency response. Using the diffusion-recombination model, the IMPS response is modeled for a sandwich structure and extended for the special case of lateral diffusion in a back-contact cell. In the low-frequency limit, the model is used to calculate spatial maps of the carrier ambipolar diffusion length. The observed frequency response of IMPS images is then discussed.

---

Contributing Institute(s):

1. Photovoltaik (IEK-5)

Research Program(s):

1. 1215 - Simulations, Theory, Optics, and Analytics (STOA) (POF4-121) (POF4-121)

Appears in the scientific report 2022

---

Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DEAL Wiley ; Ebsco Academic Search ; Essential Science Indicators ; IF >= 15 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

---