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Synergy of the transmittance fluctuation factor and absorption selectivity for efficient semitransparent perovskite/organic tandem solar cells with high color-fidelity.
- Source :
- Journal of Materials Chemistry A; 9/7/2023, Vol. 11 Issue 33, p17514-17524, 11p
- Publication Year :
- 2023
-
Abstract
- Semitransparent solar cells are promising power-generating windows for building integrated photovoltaics, and the color-fidelity is crucially important for their potential application. Herein, to obtain desirable neutral-colored perception while surmounting the single-junction efficiency barrier, a systematic method is introduced to design semitransparent tandem solar cells (ST-TSCs), and CsPbI<subscript>2</subscript>Br/PTB7-Th:IEICO-4F-based perovskite/organic tandem solar cells (P/O-TSCs) with outstanding color-fidelity are first reported. Above all, a numerical method, which includes the fluctuation factor of external quantum efficiency (EQE<subscript>ff</subscript>) within the visible range to select the front-cell and the absorption selectivity factor within the near-infrared spectrum (S<subscript>NIR</subscript>) to assess the rear-cell, is established to construct the device structure. Second, the theoretical transmittance fluctuation factor within the visible range (TFF<subscript>VIS</subscript>) and absorption selectivity factor (S) are developed to evaluate ST-TSCs' color-fidelity and photovoltaic performance. Finally, a PTB7-Th layer is introduced to passivate the halogen vacancy defects of CsPbI<subscript>2</subscript>Br. As a result, the neutral-colored semitransparent P/O-TSCs with a color coordinate of (0.344, 0.349) are achieved, which possess an efficiency of 13.56%, an average visible transmittance of 26.28% and a color rendering index of 96.4. The synergistic effects of the transmittance fluctuation factor and light-absorption selectivity open the path to design and fabricate semitransparent P/O-TSCs with balanced efficiency and good color neutrality. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20507488
- Volume :
- 11
- Issue :
- 33
- Database :
- Complementary Index
- Journal :
- Journal of Materials Chemistry A
- Publication Type :
- Academic Journal
- Accession number :
- 170062157
- Full Text :
- https://doi.org/10.1039/d3ta03614f