期刊
MATERIALS TODAY ENERGY
卷 5, 期 -, 页码 107-111出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mtener.2017.06.002
关键词
MoS2; Spray-coating; Organic photovoltaics; Transfer matrix method
资金
- University of Texas at Dallas
- Consejo Nacional de Ciencia y Tecnologia (CONACyT) [NL-2010-C33-149216]
- Creative Materials Discovery Program (Korea) [NRF-2015M3D1A1068061]
- South West Academy of Nanoelectronics (SWAN)
- SRC center - Nanoelectronics Research Initiative and NIST
- Center for Low Energy Systems Technology (LEAST)
- SRC STARnet Centers - MARCO
- DARPA
- National Science Foundation [DMR-1305893]
- Air Force Office of Scientific Research
- Air Force Research Laboratory, Materials and Manufacturing Directorate
- Texas Instruments Distinguished Chair in Nanoelectronics
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1305893] Funding Source: National Science Foundation
Molybdenum disulphide (MoS2) exhibits high work function and high mobility, making it a promising candidate for electronic applications. Currently, most applications require high vacuum or high reaction temperature processes to deposit MoS2. Here, we report organic photovoltaic devices made by roomtemperature spray-coating of liquid-exfoliated MoS2 suspension to form hole transport layer (HTL) on top of poly(3-hexylthiophene): phenyl-C60-butyric acid methyl ester bulk heterojunction. Such an approach is compatible with large area applications. Current-voltage data showed that fill factor of devices with MoS2 HTL is similar to the devices using poly(3,4-ethylenedioxythiophene): poly(styrenesulfonate) HTL. However, open circuit voltage and short circuit current density (J(sc)) are reduced, with the amount of J(sc) reduction depending strongly on active layer thickness. These results can be understood by the strong absorption of light by MoS2, reducing/eliminating the back reflection from the top silver electrode. The experimental results are corroborated by calculations using transfer matrix method. (C) 2017 Elsevier Ltd. All rights reserved.
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