Electric field modulation of photoluminescence in cadmium selenide liquid junction solar cells
| Autor: | Micha Tomkiewicz, Rohana Garuthara, Robert P. Silberstein |
|---|---|
| Rok vydání: | 1983 |
| Předmět: |
Photoluminescence
Materials science Cadmium selenide Condensed Matter::Other business.industry Physics::Optics General Physics and Astronomy Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Condensed Matter::Materials Science chemistry.chemical_compound Depletion region chemistry Standard electrode potential Electric field Optoelectronics Photoluminescence excitation Electric potential business Electrode potential |
| Zdroj: | Journal of Applied Physics. 54:6787-6789 |
| ISSN: | 1089-7550 0021-8979 |
| DOI: | 10.1063/1.331843 |
| Popis: | We have utilized photoluminescence, modulated by small periodic changes of electrode potential, to study the potential distribution at the surface of single crystal cadmium selenide in contact with an electrolyte. We have shown that at reverse bias and at electrode potentials, not far from the flat‐band potential, the modulated photoluminescence is described by the ‘‘dead layer’’ theory, in which the electric field in the space‐charge layer quenches completely the photoluminescence in that region. The electrical characterization of the interface, based on modulated photoluminescence, agrees well with more conventional impedance measurements.We have utilized photoluminescence, modulated by small periodic changes of electrode potential, to study the potential distribution at the surface of single crystal cadmium selenide in contact with an electrolyte. We have shown that at reverse bias and at electrode potentials, not far from the flat‐band potential, the modulated photoluminescence is described by the ‘‘dead layer’’ theory, in which the electric field in the space‐charge layer quenches completely the photoluminescence in that region. The electrical characterization of the interface, based on modulated photoluminescence, agrees well with more conventional impedance measurements. |
| Databáze: | OpenAIRE |
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