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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Dissanayake, N. Ashraf, A. Yutong Pang Eisaman, M.D. |
| Copyright Year | 2013 |
| Description | Author affiliation: Sustainable Energy Technol., Brookhaven Nat. Lab., Upton, NY, USA (Dissanayake, N.; Ashraf, A.; Yutong Pang; Eisaman, M.D.) |
| Abstract | We present a novel and comprehensive technique to measure the internal quantum efficiency of light absorbed as a guided-mode in a thin-film photovoltaic (TPV) over a broad range of wavelengths. Evanescent prism coupling is utilized to selectively excite individual guided-modes at a given wavelength and polarization across a broad spectrum. The Guided-Mode Quantum Efficiency (GIQE) provides a direct quantitative method to design TPVs which can optimize light trapping through guided-modes for higher power conversion efficiency. Furthermore, using theoretical photocarrier generation profile and GIQE of a specific guided-mode, we can probe the spatially dependent charge extraction in the active layer in a direction normal to the substrate. Therefore this technique enables the identification of regions of poor performance due to recombination and trapping within the active layer in a TPV device. |
| Sponsorship | IEEE Electron Devices Soc. |
| Starting Page | 1406 |
| Ending Page | 1411 |
| File Size | 1342590 |
| Page Count | 6 |
| File Format | |
| DOI | 10.1109/PVSC.2013.6744407 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2013-06-16 |
| Publisher Place | USA |
| Access Restriction | Subscribed |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Optical polarization Photoconductivity Optical coupling Photodiodes Optical scattering Optical variables measurement Charge carriers light trapping Guided-mode quantum efficiency Thin-film photovoltaics |
| Content Type | Text |
| Resource Type | Article |
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