TY  - THES
AU  - Cao, Zhao
TI  - High-Resolution Photocurrent Mapping of Thin-Film Silicon Solar Cells Using Scanning Near-Field Optical Microscopy
VL  - 536
PB  - RWTH Aachen University
VL  - Dissertation
CY  - Jülich
M1  - FZJ-2021-02526
SN  - 978-3-95806-548-2
T2  - Schriften des Forschungszentrums Jülich Reihe Energie & Umwelt / Energy & Environment
SP  - xiii, 148
PY  - 2021
N1  - Dissertation, RWTH Aachen University, 2021
AB  - A solar cell is used to directly convert the sunlight into electrical energy. The keyindicator for the performance of a solar cell, hence for its competitiveness comparedwith other forms of renewable energies is the conversion efficiency. The conversionefficiency of a solar cell strongly depends on its local optoelectronic properties, suchas local light coupling efficiency or local material inhomogeneity, on the microscopicor even nanoscopic length scales. Therefore, an accurate understanding and assessmentof the specific effects of these factors on the photogenerated current wouldprovide valuable information for the improvement of the solar cell performance. Thiswork presents local photocurrent measurements of various thin-film silicon solar cellswith subwavelength spatial resolution by using an aperture-type scanning near-fieldoptical microscope (a-SNOM) as the illumination source. The measurement methodallows for direct access to the local optoelectronic properties. With the support offinite-difference time-domain (FDTD) simulations, their individual contributions tothe photocurrent generation are analyzed....
LB  - PUB:(DE-HGF)3 ; PUB:(DE-HGF)11
UR  - https://juser.fz-juelich.de/record/893048
ER  -