1. Light-absorption enhancement design of ultrathin perovskite solar cells with conformal structure
- Author
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Fengxue Tan, Can Deng, Xinyu Tan, Lei Sun, Wensheng Yan, Guangming Shen, Li Guan, and Yiteng Tu
- Subjects
Photocurrent ,Materials science ,Acoustics and Ultrasonics ,Tandem ,business.industry ,Doping ,Finite-difference time-domain method ,chemistry.chemical_element ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Tin oxide ,01 natural sciences ,0104 chemical sciences ,Surfaces, Coatings and Films ,Electronic, Optical and Magnetic Materials ,chemistry ,Fluorine ,Optoelectronics ,0210 nano-technology ,business ,Layer (electronics) ,Perovskite (structure) - Abstract
We report a structural design of ultrathin perovskite solar cells based on a conformal structure at the rear surface for potential applications in both single-junction and tandem cells. The light transmittances of the front and the rear surfaces are calculated in the wavelength range of 300–800 nm via the finite difference time domain numerical simulation method. Compared with the reference cell, significant photocurrent density enhancement of 27.5% and 29.7% are achieved when the ratios of height to width of the fluorine doped tin oxide nanoblock are 2 and 3, respectively. For the case with a hole transport material layer, the enhancements of photocurrent density enhancements are 19.2% and 29.0%, respectively. When back Au is removed, the photocurrent density also has notable enhancements of 23.3% and 45.9%, respectively. The achieved results are beneficial for the development of efficient ultrathin single-junction and tandem perovskite solar cells.
- Published
- 2018