Abstract
Recent studies have shown that the addition of inorganic metal oxide nanoparticles (NPs) can enhance the power conversion efficiency (PCE) of organic solar cells (OSCs). In this paper influences of mixing ZnO (n-type) and NiO (p-type) NPs to the photoactive layer of poly(3-hexylthiophene) and [6,6]-phenyl C61-butyric acid methyl ester (P3HT:PC61BM) were discussed. It is interesting to note that the optimized device with ZnO:NiO NPs achieved a PCE of 4.37% compared to the bare-doped NPs cell (3.56%) under light illumination intensity of 100 mW/cm2. Further investigations based on charge extraction by linearly increasing voltage (CELIV) technique have been carried out to explain the possible reason for PCE enhancement. The improved performance is attributed to the enhanced charge carrier’s transportation and reduced exciton (electron/hole pair) annihilation. As evidence by CELIV measurements, the PCE degrades with further addition of ZnO:NiO NPs concentration to the photoactive layer due to deep-trap states.
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The work was financially supported by a grant from Mansoura University (Grant No. MU-SCI-20-14).
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Salim, E. Charge extraction enhancement in hybrid solar cells using n-ZnO/p-NiO nanoparticles. J Mater Sci: Mater Electron 32, 28830–28839 (2021). https://doi.org/10.1007/s10854-021-07267-6
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DOI: https://doi.org/10.1007/s10854-021-07267-6