Lee Donggu, Kim Junmo, Park Gyeongtae, Bae Hyeong Woo, An Myungchan, Kim Jun Young
Realistic Media Research Center, Innovative Technology Research Division, Gumi Electronics & Information Technology Research Institute (GERI), Gumi 39253, Gyeonsangbuk-do, Korea.
Department of Semiconductor Engineering, Gyeongsang National University, 501 Jinju-daero, Jinju 52828, Gyeongnam, Korea.
Polymers (Basel). 2020 Apr 24;12(4):992. doi: 10.3390/polym12040992.
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, MoO, exhibited stable operating properties with a PCE drop rate of -0.13%/°C, as compared to polymeric HEL, PEDOT:PSS (-0.20%/°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.
有机太阳能电池（OSCs）是有望替代化石燃料的可再生能源。基于材料和器件工程方面的巨大努力，有机太阳能电池的功率转换效率（PCE）有所提高。然而，为了实现商业化，有机太阳能电池的稳定性，如长寿命、负温度系数等，仍需提高。在本研究中，我们研究了在接近300 - 420 K的高工作温度下有机太阳能电池的性能，这是光伏应用中的典型温度区域，采用了不同的空穴提取层（HEL）。与聚合物空穴提取层PEDOT:PSS（-0.20%/°C）相比，基于金属氧化物的空穴提取层MoO表现出稳定的工作特性，功率转换效率下降率为-0.13%/°C。与坚固的无机金属氧化物空穴提取层相比，聚合物空穴提取层的这种性能下降源于与PEDOT:PSS接触界面的降解。
