Annealing effect of hybrid solar cells based on poly (3-hexylthiophene) and zinc-oxide nanostructures
Date
2013Author
Motaung, David
Malgas, Gerald
Ray, Suprakas S.
Arendse, Christopher
Metadata
Show full item recordAbstract
The structural growth and optical and photovoltaic properties of the organic–inorganic hybrid
structures of zinc
oxide (ZnO)-nanorods/poly-3-hexylthiophene (P3HT) and two variations of organic polymer blends of
ZnO/ P3HT:C60 fullerene and ZnO/P3HT:6,6]-phenyl C61 butyric acid methyl ester were studied in
detail during thermal annealing. The ordering of the P3HT nanocrystals increased during annealing,
which also improved hole transport in the hybrid structures. The optical constants of the
ZnO/P3HT:[6,6]-phenyl C61 butyric acid methyl ester (PCBM) films elevated with annealing temperature
due to the improved crystallisation induced by the formation of P3HT crystalline domains. As a
result, a maximum power conversion efficiency of approximately 1.03% was achieved for the annealed
ZnO/P3HT:PCBM device at 140 °C. These findings indicate that ZnO-nanorods/P3HT:PCBM films
are stable at temperatures up to 160 °C.