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ALIASGHAR AYOBI1,*
In this work the effects of charge carriers mobility on the performance of P3HT:PCBM based bulk heterojunction (BHJ) organic solar cells (OSCs) has been investigated. For this purpose, the simulation tool ATLASSILVACO package based on drift-diffusion approximation has been used. The simulation results indicate that with increasing charge carriers mobility, short circuit current density (Jsc) of BHJ OSCs has been increased. Also with considering a constant value for hole mobility and increasing the electron mobility, open circuit voltage (Voc) of BHJ OSCs has been decreased. While with considering a constant value for electron mobility and increasing the hole mobility, Voc has been increased. In the case of power conversion efficiency (PCE) of BHJ OSCs, the simulation results indicate that with considering an average value for mobility of one charge carrier and increasing the mobility of other charge carrier, the PCE of devices has been increased gradually towards the optimum point. But after this point, the PCE has been decreased. Also, the fill factor (FF) of BHJ OSCs has been increased with increasing the mobility of charge carriers due to decreasing of direct recombination rate.
Mobility, Bulk hetero-junction, Organic solar cell, Open circuit voltage, Short circuit current, Power conversion efficiency, Fill factor.
ALIASGHAR AYOBI, Comparative study of charge carrier mobility effect on the performance of conventional P3HT:PCBM based bulk hetero-junction organic solar cells, Optoelectronics and Advanced Materials - Rapid Communications, 19, 7-8, July-August 2025, pp.371-377 (2025).
Submitted at: Sept. 17, 2024
Accepted at: Aug. 4, 2025
Optoelectronics and Advanced Materials - Rapid Communications
(2024): Impact Factor = 0.4 - Journal Citation Reports (Clarivate Analytics, 2025)
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