Mapping Current Collection in Cross Section: The case of Copper- doped CdTe Solar Cells | IEEE Conference Publication | IEEE Xplore

Mapping Current Collection in Cross Section: The case of Copper- doped CdTe Solar Cells


Abstract:

For decades, copper has been used to improve the performance of cadmium telluride thin film solar cells. However, it has also been shown to be the main cause of metastabi...Show More

Abstract:

For decades, copper has been used to improve the performance of cadmium telluride thin film solar cells. However, it has also been shown to be the main cause of metastability in CdTe. Recently a low activation energy has been reported for the thermal diffusion of Cu in CdTe explaining the ease of motion that it has under moderate temperatures. The community consensus is that copper segregates to the absorber grain boundaries, where it's either beneficial or detrimental to device performance depending on its concentration. Using nanoscale X-ray micrsocopy and a two-dimensional drift-diffusion model we present a preliminary correlation between local copper distribution and electrical performance of a single-junction CdTe/CdS solar cell.
Date of Conference: 15 June 2020 - 21 August 2020
Date Added to IEEE Xplore: 05 January 2021
ISBN Information:
Print on Demand(PoD) ISSN: 0160-8371
Conference Location: Calgary, AB, Canada

Funding Agency:


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