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Inverted perovskite solar cells with high fill-factors featuring chemical bath deposited mesoporous NiO hole transporting layers
- Source :
- Nano Energy. 49:163-171
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The development of hole transporting layers that optimize charge extraction and minimize interfacial recombination losses offer an important route for further enhancement in the performance of inverted perovskite solar cells (PSCs). NiO is a widely adopted hole transporting material in such devices, possessing a reasonably high hole mobility and suitable energy level positions to provide high efficiency solar cells. However, its use in inverted PSCs has typically resulted in relatively low fill factors, which arises from underlying contact issues between the perovskite and NiO layers. In this work, we address this issue by employing a thin mesoporous NiO scaffold formed via chemical bath deposition as the hole transporting layer. This hole transporting material is found to dramatically improve the performance of inverted mixed cation and anion PSCs by enhancing their light harvesting and charge transporting efficiencies. Optimized devices achieve efficiencies of up to 16.7% and fill factors as high as 85%. These values are significantly higher than PSCs using conventionally spray-deposited planar NiO hole transport layers, which exhibit efficiencies of up to 14.5% and fill factors of only 73%.
- Subjects :
- Electron mobility
Materials science
Renewable Energy, Sustainability and the Environment
business.industry
Non-blocking I/O
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
7. Clean energy
0104 chemical sciences
Ion
Planar
Optoelectronics
General Materials Science
Electrical and Electronic Engineering
0210 nano-technology
Mesoporous material
business
Layer (electronics)
Chemical bath deposition
Perovskite (structure)
Subjects
Details
- ISSN :
- 22112855
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Nano Energy
- Accession number :
- edsair.doi...........b71176006665cc196c61be45a641430e