Observation of charge coupling in InGaP/InGaAs/Ge triple-junction solar cells by electric modulus spectroscopy
| Autor: | Forest Shih-Sen Chien, Kuan-Yu Lai, Gia-Wei Shu, Bi-Cheng Lei, Chun-Ying Huang |
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| Rok vydání: | 2017 |
| Předmět: |
010302 applied physics
Physics Physics and Astronomy (miscellaneous) business.industry Triple junction chemistry.chemical_element Charge (physics) Germanium 02 engineering and technology 021001 nanoscience & nanotechnology 01 natural sciences Molecular physics Gallium arsenide Coupling (electronics) chemistry.chemical_compound Optics Depletion region chemistry Excited state 0103 physical sciences 0210 nano-technology business Spectroscopy |
| Zdroj: | Applied Physics Letters. 110:033901 |
| ISSN: | 1077-3118 0003-6951 |
| DOI: | 10.1063/1.4974308 |
| Popis: | Observation of charge coupling effect is important to characterize the electrical behaviors of triple-junction solar cells (TJSCs). Electric modulus (M) spectroscopy incorporated with adequate lasers is demonstrated to be an effective approach to investigate the internal electrical characteristics of the individual subcells in InGaP/InGaAs/Ge TJSCs. The distinct characteristic peaks of imaginary part of M corresponding to three individual subcells are identified, as specific lasers are applied. The charge coupling between the excited subcell and neighboring subcell is observed, which causes the expansion of the depletion region in the latter. This approach provides the information of charge coupling for the design of TJSCs. |
| Databáze: | OpenAIRE |
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