Enhancing the structural and optoelectronic properties of double ETL nickel-doped CsPbIBr2 perovskite solar cells

The structural, optoelectronic, and photovoltaic properties of CsPbIBr2 perovskite films were significantly enhanced by incorporating 4% Ni doping and utilizing a double electron transport layer (ETL) consisting of titanium dioxide (TiO2) and nickel-doped tungsten trioxide (Ni-WO3). X-ray diffractio...

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Published inCrystEngComm Vol. 26; no. 26; pp. 3535 - 3546
Main Authors Khan, M I, Mujtaba, Ali, Dahshan, A, Shahbaz Ahmed Khan, Boota, Muhammad, Laref, A, Elqahtani, Zainab Mufarreh, Alwadai, Norah
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 01.07.2024
Subjects
Doping
Electromagnetic absorption
Electron transport
Lattice parameters
Nickel
Optoelectronics
Perovskites
Photovoltaic cells
Refractivity
Solar cells
Titanium dioxide
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Summary:The structural, optoelectronic, and photovoltaic properties of CsPbIBr2 perovskite films were significantly enhanced by incorporating 4% Ni doping and utilizing a double electron transport layer (ETL) consisting of titanium dioxide (TiO2) and nickel-doped tungsten trioxide (Ni-WO3). X-ray diffraction (XRD) analysis of perovskite film revealed an increase in crystal size from 29.9 nm to 55.2 nm and a decrease in lattice constant from 6.024 Å to 6.012 Å upon Ni doping, indicating improved crystallinity. The energy bandgap of pure and Ni-CsPbIBr2 decreased from 2.0 eV to 1.94 eV, respectively, enhancing light absorption efficiency. The refractive index of pure and Ni-CsPbIBr2 increased from 2.625 to 2.645, respectively, enhancing light trapping and absorption. J–V measurements showed an efficiency increase from 12.26% to 12.96% with the introduction of a double ETL, demonstrating significant advancements in perovskite solar cell performance.
ISSN:1466-8033
DOI:10.1039/d4ce00300d