Observation of charge coupling in InGaP/InGaAs/Ge triple-junction solar cells by electric modulus spectroscopy.

Autor: Chun-Ying Huang, Gia-Wei Shu, Kuan-Yu Lai, Bi-Cheng Lei, Forest Shih-Sen Chien
Předmět:
Zdroj: Applied Physics Letters; 1/16/2017, Vol. 110 Issue 3, p1-5, 5p, 5 Graphs
Abstrakt: Observation of charge coupling effect is important to characterize the electrical behaviors of triplejunction 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. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index