| Autor: |
Motoshi Nakamura, Keishi Tada, Takumi Kinoshita, Takeru Bessho, Chie Nishiyama, Issei Takenaka, Yoshinori Kimoto, Yuta Higashino, Hiroki Sugimoto, Hiroshi Segawa |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
iScience, Vol 23, Iss 12, Pp 101817- (2020) |
| Druh dokumentu: |
article |
| ISSN: |
2589-0042 |
| DOI: |
10.1016/j.isci.2020.101817 |
| Popis: |
Summary: The highest theoretical efficiency of double junction solar cells is predicted for architectures with the bottom cell bandgap (Eg) of approximately 0.9–1.0 eV, which is lower than that of a typical Si cell (1.1 eV). Cu(In,Ga)(Se,S)2 (CIGS) solar cells exhibit a tunable Eg depending on their elemental composition and depth profile. In this study, various CIGS solar cells with Eg ranging from 1.02 to 1.14 eV are prepared and a spectrum splitting system is used to experimentally demonstrate the effect of using lower-Eg cells as the bottom cell of two-junction solar cells. The four-terminal tandem cell configuration fabricated using a mixed-halide perovskite top cell (Eg = 1.59 eV; stand-alone efficiency = 21.0%) and CIGS bottom cell (Eg = 1.02 eV; stand-alone efficiency = 21.5%) with a 775-nm spectral splitting mirror exhibits an efficiency of 28.0% at the aperture area of 1 cm2. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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