Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 94, Issue 8, Pages 1379-1383Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2010.04.006
Keywords
Aluminum doped zinc oxide; Atomic layer deposition; Organic solar cells
Funding
- Finnish Funding Agency for Technology and Innovation (TEKES)
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Aluminum doped zinc oxide (AZO) films were studied as an alternative transparent electrode material to indium tin oxide (ITO) in organic photovoltaic devices. The AZO films were prepared by atomic layer deposition from diethylzinc, water and trimethylaluminum precursors. The same number of deposition cycles resulted in 170 and 90 nm thick films at deposition temperatures of 150 and 250 degrees C, respectively. Uniform films with wedge-shaped crystallites were observed at both temperatures. The functionality of the AZO electrodes in photovoltaic applications was tested using known organic photoactive layers. Devices with AZO electrode showed comparable performance to the reference device where ITO was used as transparent electrode. Moreover, the devices with AZO electrode were stable in open air showing no degradation during 40 days time interval. (C) 2010 Elsevier B.V. All rights reserved.
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