In the highly efficient n-i-p structure of perovskite solar cells (PSCs), organic material Spiro-OMeTAD is usually used as the hole transport layer (HTL). However, its high hygroscopicity and thermal instability seriously limit its commercial application. In contrast, nickel oxide (NiOx) is a promising alternative due to its wideband gap, low cost, and high stability. By comparing with traditional spin coating, pulsed laser deposition (PLD) can produce relatively compact films and avoid the damage of solvent evaporation on the morphology and crystal quality, thus improving the device stability. This work introduces PLD to prepare CsPbBr3 and NiOx thin films to obtain highly stable all-inorganic CsPbBr3-based PSCs. Carrier dynamics are studied via electrochemical measurements and transient absorption spectroscopy. The power conversion efficiency of the all-inorganic CsPbBr3-based PSCs with NiOx HTL can be improved to 5.47% under optimum thickness and annealing temperature. It is revealed that the thermal stability is significantly enhanced, where unencapsulated all-inorganic CsPbBr3 PSCs specifically can maintain 95% of initial efficiency for 1200 h under the condition of 85 °C and 30% relative humidity.
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28 August 2023
Research Article|
August 28 2023
Highly stable all-inorganic CsPbBr3 perovskite solar cells based on pulsed laser deposition
Qianglin Song
;
Qianglin Song
(Data curation, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Supervision, Validation, Visualization, Writing – original draft, Writing – review & editing)
1
School of Physics, Southeast University
, Nanjing 211189, China
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Hao Zhang
;
Hao Zhang
a)
(Data curation, Formal analysis, Investigation, Methodology, Project administration, Resources, Software, Writing – original draft, Writing – review & editing)
2
Department of Physics, University of Otago
, Dunedin 9016, New Zealand
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Xuan Jin
;
Xuan Jin
(Data curation, Formal analysis, Investigation, Methodology, Resources, Software, Supervision)
1
School of Physics, Southeast University
, Nanjing 211189, China
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Hong Wang
;
Hong Wang
(Conceptualization, Formal analysis, Investigation, Methodology, Resources)
3
School of Physics and Technology, Nanjing Normal University
, Nanjing 210023, China
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Peng Wang;
Peng Wang
(Formal analysis, Investigation, Methodology, Supervision)
4
Nanjing Foreign Language School
, Nanjing 210018, China
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Mohsin Ijaz
;
Mohsin Ijaz
(Data curation, Methodology, Resources, Software, Visualization)
2
Department of Physics, University of Otago
, Dunedin 9016, New Zealand
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Appl. Phys. Lett. 123, 092103 (2023)
Article history
Received:
April 30 2023
Accepted:
August 14 2023
Citation
Qianglin Song, Hao Zhang, Xuan Jin, Hong Wang, Peng Wang, Mohsin Ijaz, Qingyu Xu; Highly stable all-inorganic CsPbBr3 perovskite solar cells based on pulsed laser deposition. Appl. Phys. Lett. 28 August 2023; 123 (9): 092103. https://doi.org/10.1063/5.0156462
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