Journal
POLYMERS
Volume 12, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/polym12040992
Keywords
polymer solar cell; molybdenum oxide; operating temperature; hole-extraction layer; MoO3
Categories
Funding
- National Research Foundation of Korea(NRF) - Korea government (Ministry of Science and ICT) [NRF-2019R1C1C1005258, 2019R1G1A1100052]
- GNU-Samsung Display Center
- National Research Foundation of Korea [2019R1G1A1100052] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Organic solar cells (OSCs) are promising renewable energy sources for replacing fossil fuels. The power conversion efficiency (PCE) of OSCs has increased based on tremendous effort in material and device engineering. Still, the stability of OSC, such as long lifetime, negative temperature coefficient, must be enhanced for commercialization. In this study, we investigated OSC performance at a high operating temperature near 300-420 K, which are typical temperature regions in photovoltaic applications, with a different hole-extraction layer (HEL). The metal oxide-based HEL, MoO3, exhibited stable operating properties with a PCE drop rate of -0.13%/degrees C, as compared to polymeric HEL, PEDOT:PSS (-0.20%/degrees C). This performance reduction of polymeric HEL originated from the degradation of the interface in contact with PEDOT:PSS, as compared to the robust inorganic metal oxide HEL.
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