Abstract
The inverted polymer solar cell (PSC) based on a sol-gel derived zinc oxide (ZnO) thin film as an electron selective layer is investigated. The device performance is improved after the fabricated device is placed in air for a few days. The improvement is attributed to the self-organization of the poly(3-hexylthiophene)/[6,6]-phenyl-C 61 -butyric acid methyl ester layer and oxidation of the silver electrode with time, resulting in a significant enhancement in the short circuit current, fill factor and open circuit voltage. The investigation shows that the inverted PSC based on ZnO thin film exhibits a high efficiency of 3.8% on the 6th day after fabrication without the use of poly(3,4-ethylene dioxythiophene):poly(styrene sulfonate) and encapsulation.
Original language | English |
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Pages (from-to) | 4964-4969 |
Number of pages | 6 |
Journal | Thin Solid Films |
Volume | 518 |
Issue number | 17 |
DOIs | |
Publication status | Published - Jun 30 2010 |
Externally published | Yes |
Keywords
- Oxidation
- Poly(3-hexylthiophene)
- Polymer solar cells
- Silver
- Surface morphology
- Work function
- Zinc oxide
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Surfaces and Interfaces
- Surfaces, Coatings and Films
- Metals and Alloys
- Materials Chemistry