Projects per year
Abstract
Hybrid perovskites have received tremendous attention due to their exceptional photovoltaic and optoelectronic properties. Among the two widely used perovskite solar cell device architectures of n-i-p and p-i-n, the latter is interesting in terms of its simplicity of fabrication and lower energy input. However this structure mostly uses PEDOT:PSS as a hole transporting layer which can accelerate the perovskite solar cell degradation. Hence the development of stable, inorganic hole extraction layers (HEL), without compromising the simplicity of device fabrication is crucial in this fast-growing photovoltaic field. Here we demonstrate a low temperature (~100 °C) solution - processed and ultrathin (~6 nm) NiO nanoparticle thin films as an efficient HEL for CH3NH3PbI3 based perovskite solar cells. We measure a power conversion efficiency (PCE) of 13.3% on rigid glass substrates and 8.5% on flexible substrates. A comparison with PEDOT:PSS based MAPbI3 solar cells (PCE ~ 7.9%) shows that NiO based solar cells have higher short circuit current density and improved open circuit voltage (1.03 V). Apart from the photovoltaic performance under 1 Sun, the efficient hole extraction property of NiO is demonstrated for indoor lighting as well with a PCE of 23.0% for NiO based CH3NH3PbI2.9Cl0.1 p-i-n solar cells under compact fluorescent lighting. Compared to the perovskite solar cells fabricated on PEDOT:PSS HEL, better shelf-life stability is observed for perovskite solar cells fabricated on NiO HEL. Detailed microstructural and photophysical investigations imply uniform morphology, lower recombination losses, and improved charge transfer properties for CH3NH3PbI3 grown on NiO HEL.
Original language | English |
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Article number | 110071 |
Number of pages | 10 |
Journal | Solar Energy Materials and Solar Cells |
Volume | 201 |
Early online date | 8 Aug 2019 |
DOIs | |
Publication status | Published - Oct 2019 |
Keywords
- CH3NH3PbI3
- Indoor photovoltaics
- Mixed halides
- Time-resolved photoluminescence
- Shelf-life
Fingerprint
Dive into the research topics of 'Efficient indoor p-i-n hybrid perovskite solar cells using low temperature solution processed NiO as hole extraction layers'. Together they form a unique fingerprint.Projects
- 3 Finished
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H2020 MSCA - PHOTOPEROVSKITIES: H2020 MSCA Fellowship 2016 Lethy
Samuel, I. D. W. (PI)
1/09/17 → 31/08/19
Project: Fellowship
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Equipment Account: Characterisation and Manipulation of Advanced Functional Materials and their Interfaces at the Nanoscale
Samuel, I. D. W. (PI)
1/10/13 → 30/09/23
Project: Standard
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ERC Advanced Grant EXCITON: EU FP7 ERC Advanced Grant 2012 EXCITON
Samuel, I. D. W. (PI)
1/04/13 → 30/03/19
Project: Standard
Profiles
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Lethy Krishnan Jagadamma
- School of Physics and Astronomy - Reader
- Centre for Clean Energy Research
- Centre for Energy Ethics
- Energy Harvesting Research Group
Person: Academic, Academic - Research
Datasets
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Efficient indoor p-i-n hybrid perovskite solar cells using low temperature solution processed NiO as hole extraction layers (dataset)
Krishnan Jagadamma, L. (Creator), Blaszczyk, O. (Creator), Sajjad, M. T. (Creator), Ruseckas, A. (Creator) & Samuel, I. D. W. (Creator), University of St Andrews, 19 Aug 2019
DOI: 10.17630/38a7d71f-2a90-4d6e-b477-dd4d636cea07
Dataset
File