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Conference proceeding
Quantifying Bulk and Surface Recombination in CdTe Solar Cells Using Time-Resolved Terahertz Spectroscopy
2021 IEEE 48th Photovoltaic Specialists Conference (PVSC), pp 0648-0651
20 Jun 2021
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Understanding the nature of recombination mechanisms is essential for higher power conversion efficiency in photovoltaic (PV) devices. Here we use a combination of time-resolved terahertz spectroscopy and numerical modeling to determine the bulk Shockley-Read-Hall lifetime and interface and back surface recombination velocities in CdTe thin film stacks. The measurement was facilitated by fabricating wire-grid device structures using conventional laser scribing. Evaluation of a glass/FTO/SnO 2 /CdS/CdTe stack treated with CdCl 2 allowed separation of the CdTe absorber bulk lifetime, 1.6 ns, from the back surface recombination velocity, ~6x10 4 cm/s, and indicated that CdTe/CdS interface recombination velocity had no significant impact on carrier dynamics.
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Details
- Title
- Quantifying Bulk and Surface Recombination in CdTe Solar Cells Using Time-Resolved Terahertz Spectroscopy
- Creators
- Mohammad M Taheri - Drexel UniversityTriet M Truong - Drexel UniversityShannon Fields - University of DelawareWilliam N Shafarman - University of DelawareBrian E McCandless - University of DelawareJason B Baxter - Drexel UniversityIEEE
- Publication Details
- 2021 IEEE 48th Photovoltaic Specialists Conference (PVSC), pp 0648-0651
- Publisher
- IEEE
- Grant note
- Office of Energy Efficiency and Renewable Energy (10.13039/100006134)
- Resource Type
- Conference proceeding
- Language
- English
- Academic Unit
- Materials Science and Engineering; Chemical and Biological Engineering
- Web of Science ID
- WOS:000701690400147
- Scopus ID
- 2-s2.0-85115918033
- Other Identifier
- 991019168051404721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Energy & Fuels
- Engineering, Electrical & Electronic
- Physics, Applied