期刊
APPLIED PHYSICS LETTERS
卷 96, 期 19, 页码 -出版社
AIP Publishing
DOI: 10.1063/1.3430060
关键词
current density; electrochemical electrodes; excitons; indium compounds; light absorption; light interference; optical polymers; organic semiconductors; power conversion; radiation quenching; short-circuit currents; solar cells
资金
- National Science Council [NSC98-3114-E-009-005, 98-2221-E-009-028]
- Ministry of Education
We have used indium tin oxide (ITO), a transparent conducting oxide, as an optical spacer to improve the performance of inverted polymer solar cells. The optical interference effect resulted in spatial redistribution of the optical field in the devices. Although the degree of light absorption in inverted cells was not increased, the resulting favorable distribution of photogenerated excitons probably decreased the level of exciton quenching near the electrodes. As a result, the introduction of the ITO optical spacer at an appropriate thickness increased the short-circuit current density and the overall power conversion efficiency. (C) 2010 American Institute of Physics. [doi:10.1063/1.3430060]
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