Citation
Oleiwi, Hind Fadhil and Zakaria, Azmi and Yap, Chi Chin and Abbas, Haidr Abdulzahra and Tan, Sin Tee and Lee, Hock Beng and Tan, Chun Hui and Ginting, Riski Titian and Alshanableh, Abdelelah Ali Ghathwan and Talib, Zainal Abidin
(2016)
Enhanced photovoltaic performance of CdS-sensitized inverted organic solar cells prepared via a successive ionic layer adsorption and reaction method.
In: 1st UKM-ISESCO-COMSATS International Workshop on Nanotechnology for Young Scientists (IWYS2016), 28-30 Nov. 2016, Hotel Bangi-Putrajaya, Bangi, Selangor. (pp. 1-5).
Abstract
One-dimensional ZnO nanorods (ZNRs) synthesized on fluorine-doped tin oxide (FTO) glass by hydrothermal method were modified with cadmium sulfide quantum dots (CdS QDs) as an electron transport layer (ETL) in order to enhance the photovoltaic performance of inverted organic solar cell (IOSC). In present study, CdS QDs were deposited on ZNRs using a Successive Ionic Layer Adsorption and Reaction method (SILAR) method. In typical procedures, IOSCs were fabricated by spin-coating the P3HT:PC61BM photoactive layer onto the as-prepared ZNRs/CdS QDs. The results of current-voltage (I-V) measurement under illumination shows that the FTO/ZNRs/CdS QDs/ P3HT:PC61BM/ PEDOT: PSS/Ag IOSC achieved a higher power conversion efficiency (4.06 %) in comparison to FTO/ZNRs/P3HT:PC61BM/PEDOT: PSS/Ag (3.6 %). Our findings suggest that the improved open circuit voltage (Voc) and short circuit current density (Jsc) of ZNRs/CdS QDs devices could be attributed to enhanced electron selectivity and reduced interfacial charge carrier recombination between ZNRs and P3HT:PC61BM after the deposition of CdS QDs. The CdS QDs sensitized ZNRs reported herein exhibit great potential for advanced optoelectronic application.
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