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Preparation of Efficient and Stable CsPbI3 Perovskite Active Layers with Vacuum-Dynamic Method
Abstract
The dynamic vacuum-assisted thermal annealing method was employed to prepare CsPbI₃ perovskite active layers. CsPbI₃ is highly suitable for solar cells due to its high stability and optimal band gap (1.7 eV). Application of this method improved the active layer structure due to the reduction of defect states and nanopores, as well as the increase of crystalline grains size. The dynamic vacuum-assisted thermal annealing method effectively reduced trap-state density and suppressed recombination due to the faster removal of dimethylformamide (DMF). A comparative analysis of the optical and photovoltaic properties was conducted to evaluate the efficiency of perovskite solar cells (PSCs) fabricated using dynamic vacuum-assisted thermal annealing versus ambient-condition processing. As a result, the open-circuit voltage (Voc) of PSCs prepared by the vacuum-assisted method at low temperatures increased from 1.08 to 1.16 V. Additionally, the power conversion efficiency (PCE) of the active layers improved from 16.5 to 18.8%.
About the Authors
N. F. Otakulova
Arifov Institute of Ion-Plasma and Laser Technologies of Uzbekistan Academy of Sciences
Uzbekistan
Uzbekistan
Tashkent
M. A. Zakhidova
Tashkent State Technical University named after Islam Karimov; National University of Uzbekistan named after Mirzo Ulugbek
Uzbekistan
Uzbekistan
Tashkent
Sh. К. Nematov
Tashkent State Technical University named after Islam Karimov; Karshi State Technical University
Uzbekistan
Uzbekistan
Tashkent
Karshi
L. R. Nurumbetova
Arifov Institute of Ion-Plasma and Laser Technologies of Uzbekistan Academy of Sciences; Tashkent State Technical University named after Islam Karimov
Uzbekistan
Uzbekistan
Tashkent
M. Saqlain
University of Education
Pakistan
Pakistan
Lahore
B. Shahid
University of Education
Pakistan
Pakistan
Lahore
A. A. Saparbaev
Arifov Institute of Ion-Plasma and Laser Technologies of Uzbekistan Academy of Sciences; Tashkent State Technical University named after Islam Karimov; National University of Uzbekistan named after Mirzo Ulugbek
Uzbekistan
Uzbekistan
Tashkent
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Review
For citations:
Otakulova N.F., Zakhidova M.A., Nematov Sh.К., Nurumbetova L.R., Saqlain M., Shahid B., Saparbaev A.A. Preparation of Efficient and Stable CsPbI3 Perovskite Active Layers with Vacuum-Dynamic Method. Zhurnal Prikladnoii Spektroskopii. 2025;92(5):679-688. (In Russ.)
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