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Reducing toxicity and enhancing broadband solar energy harvesting of ultra-thin perovskite solar cell via SiO2 nanophotonic structure
- Source :
- Optik. 223:165624
- Publication Year :
- 2020
- Publisher :
- Elsevier BV, 2020.
-
Abstract
- Perovskite solar cell had the advantages of low cost, high efficiency and flexibility, which had significant development potential. Reducing the thickness of the perovskite absorber layer was a practicable method to reduce the content of toxic lead elements, however, an insufficient light absorption and low photocurrent were usually observed due to the shorten optical path length. In this study, SiO2 nanophotonic structure was introduced and designed by electromagnetic theory to allow the perovskite absorber layer to become thinner, while did not decrease its light absorption and photocurrent. The geometrical parameters of SiO2 nanophotonic structure was optimized by finite-difference time-domain (FDTD) method combined with particle swarm optimization algorithm to obtain the largest light absorption enhancement. When SiO2 nanophotonic structure was used, the perovskite solar cell with a 200 nm thickness perovskite absorber layer can generate the same photocurrent as the planar perovskite solar cell with a 300 nm thickness perovskite absorber layer, which can reduce toxic lead elements of perovskite material as high as 33%. The feasibility of applying SiO2 nanophotonic structure to different perovskite solar cells was further investigated.
- Subjects :
- Photocurrent
Materials science
business.industry
Nanophotonics
Finite-difference time-domain method
Perovskite solar cell
02 engineering and technology
021001 nanoscience & nanotechnology
01 natural sciences
Atomic and Molecular Physics, and Optics
Electronic, Optical and Magnetic Materials
010309 optics
Planar
0103 physical sciences
Optoelectronics
Electrical and Electronic Engineering
0210 nano-technology
business
Layer (electronics)
Optical path length
Perovskite (structure)
Subjects
Details
- ISSN :
- 00304026
- Volume :
- 223
- Database :
- OpenAIRE
- Journal :
- Optik
- Accession number :
- edsair.doi...........1d685bab099c83925381a59e3b7a839c