A study of donor/acceptor interfaces in a blend of P3HT/PCBM solar cell: Effects of annealing and PCBM loading on optical and electrical properties
OKLOBIA, Ochai and SADAT-SHAFAI, Torfeh (2013) A study of donor/acceptor interfaces in a blend of P3HT/PCBM solar cell: Effects of annealing and PCBM loading on optical and electrical properties. Solid-State Electronics, 87 (n/a). pp. 64-68. ISSN 0038-1101Full text not available from this repository.
Abstract or description
Optical, structural and electrical properties based on blend of P3HT: PCBM thin films have been investigated for several PCBM loading whilst exposed to air. Experimental evidence indicates that the peak absorption for PCBM with highest loading concentration show greater reduction in intensity upon annealing temperature of 175 °C. This provides useful information regarding PCBM segregation associated with annealing process. Comparison of GIXRD patterns indicates an increase in intraplanar d spacing and polymer grain size upon thermal annealing. Variation in open circuit voltage and short circuit current with annealing temperatures, suggests that the latter remains almost constant up to around 100 °C and improves gradually with temperature thereafter, whilst the former improves with temperature and the onset of deterioration in current density is linked to percentage PCBM loading. These results are further explained or supported by optical absorption spectroscopy to account for PCBM clustering. A power conversion efficiency of 3.38% was achieved at 175 °C for devices fabricated and tested in air.
|Subjects:||H100 General Engineering
H600 Electronic and Electrical Engineering
|Faculty:||Previous Faculty of Computing, Engineering and Sciences > Engineering|
|Depositing User:||Peter OGRODNIK|
|Date Deposited:||02 Sep 2013 13:39|
|Last Modified:||23 Sep 2013 16:18|
Actions (login required)