Journal
APPLIED PHYSICS LETTERS
Volume 96, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3395395
Keywords
electrical conductivity; electrochemical electrodes; indium compounds; nanofabrication; nanorods; organic semiconductors; polymers; solar cells; tin compounds
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Funding
- National Science Council in Taiwan [96-2221-E-009-095-MY3, 97-2120-M-006-009]
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In this paper, distinctive indium-tin-oxide (ITO) nanorods are employed to serve as buried electrodes for polymer-based solar cells. The embedded nanoelectrodes allow three-dimensional conducting pathways for low-mobility holes, offering a highly scaffolded cell architecture in addition to bulk heterojunctions. As a result, the power conversion efficiency of a polymer cell with ITO nanoelectrodes is increased to about 3.4% and 4.4% under one-sun and five-sun illumination conditions, respectively, representing an enhancement factor of up to similar to 10% and 36% compared to a conventional counterpart. Also, the corresponding device lifetime is prolonged twice as much to about 110 min under five-sun illumination.
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