期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 6, 期 6, 页码 1071-1075出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.5b00236
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资金
- National Science Foundation (NSF) [DMR-1305893]
- University of Texas at Dallas
- Consejo Nacional de Ciencia y Tecnologia (CONACyT)
- Texas Instruments Distinguished Chair in Nanoelectronics
- [NL-2010-C33-149216]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1305893] Funding Source: National Science Foundation
p-Type metal-oxide hole transport layer (HTL) suppresses recombination at the anode and hence improves the organic photovoltaic (OPV) device performance. While NiOx has been shown to exhibit good HTL performance, very thin films (<10 nm) are needed due to its poor conductivity and high absorption. To overcome these limitations, we utilize CuGaO2, a p-type transparent conducting oxide, as HTL for OPV devices. Pure delafossite phase CuGaO2 nanoplates are synthesized via microwave-assisted hydrothermal reaction in a significantly shorter reaction time compared to via conventional heating. A thick CuGaO2 HTL (similar to 280 nm) in poly(3-hexylthiophene):[6,6]-phenyl-C61-butyric acid methyl ester (P3HT:PCBM) devices achieves 3.2% power conversion efficiency, on par with devices made with standard HTL materials. Such a thick CuGaO2 HTL is more compatible with large-area and high-volume printing process.
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