Polymer nanocomposite for improving light harvesting of perovskite solar cells
Journal
2017 IEEE 44th Photovoltaic Specialist Conference
Journal Volume
24
Journal Issue
17
Pages
1月4日
Date Issued
2016
Author(s)
Hsu, F.-C. et al.
Abstract
We applied a novel analytical technique-nearfield transport imaging (TI)-to photovoltaic materials for charge-carrier transport mapping in nanometer-scale. We measured the diffusion length of a well-controlled gallium arsenide (GaAs) thin-film samples and it agrees well with the results calculated by time-resolved photoluminescence. We report for the first time on TI experiments on thin-film cadmium telluride, including the effective carrier diffusion length, as well as the first near-field imaging of the effect of a single small defect on carrier transport and recombination in a GaAs sample. Furthermore, by changing the scanning setup, we were able to do near-field cathodoluminescence (CL), and correlated the results with standard CL results. The TI technique shows great potential for high spatial resolution mapping transport properties in solar cell materials.
SDGs
Type
conference paper