Flower-shaped zinc oxide (ZnO) structures have been synthesized in a microwave at 180 C for 20 minutes using zinc nitrate and KOH. Detailed structural and morphology observation showed that the micron-sized ZnO nano-pencils grow out of the base of the flower-shaped ZnO structures. Photoluminescence spectrum measured at room temperature showed a sharp UV emission band around 390 nm which is attributed to the radiative annihilation of excitons. The synthesized PDMA and ZnO nanopencils are highly crystalline materials with one-dimensional morphology which improves the electron charge transport in the device. A distinctive photoluminescence quenching effect was observed indicating a photo-induced electron transfer. The solar cell devices fabricated from these materials demonstrated a short circuit current density of about 0.93 lA/cm2, open-circuit voltage 0.58 V, and efficiency of 0.16 %.
Reference:
Mavundla, SE, Malgas, GF, Motaung, DE and Iwuoha, EI. 2012. Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods. Journal of Materials Science, vol. 47(14), pp 5455-5460
Mavundla, S., Malgas, G., Motaung, D., & Iwuoha, E. (2012). Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods. http://hdl.handle.net/10204/6559
Mavundla, SE, GF Malgas, DE Motaung, and EI Iwuoha "Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods." (2012) http://hdl.handle.net/10204/6559
Mavundla S, Malgas G, Motaung D, Iwuoha E. Fabrication of hybrid solar cells using poly(2,5-dimethoxyaniline) hexagonal structures and zinc oxide nanorods. 2012; http://hdl.handle.net/10204/6559.
Copyright: 2012 Springer Verlag. This is the Pre/post print version of the work. The definitive version is published in Journal of Materials Science, vol. 47(14), pp 5455-5460
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