Efficient Semitransparent Solar Cells with High NIR Responsiveness Enabled by a Small-Bandgap Electron Acceptor

	Efficient Semitransparent Solar Cells with High NIR Responsiveness Enabled by a Small-Bandgap Electron Acceptor
	Liu, Feng 1,2; Zhou, Zichun 1,2; Zhang, Cheng 1,2; Zhang, Jianyun 1,2; Hu, Qin 3; Vergote, Thomas 1; Liu, Feng 3,4; Russell, Thomas P.3,5; Zhu, Xiaozhang 1,2
刊名	ADVANCED MATERIALS
	2017-06-06
卷号	29 期号:21
英文摘要	Inspired by the remarkable promotion of power conversion efficiency (PCE), commercial applications of organic photovoltaics (OPVs) can be foreseen in near future. One of the most promising applications is semitransparent (ST) solar cells that can be utilized in value-added applications such as energy-harvesting windows. However, the single-junction STOPVs utilizing fullerene acceptors show relatively low PCEs of 4%-6% due to the limited sunlight absorption because it is a dilemma that more photons need to be harvested in UV-vis-near-infrared (NIR) region to generate high photocurrent, which leads to the significant reduction of device transparency. This study describes the development of a new small-bandgap electron-acceptor material ATT-2, which shows a strong NIR absorption between 600 and 940 nm with an E-g(opt) of 1.32 eV. By combining with PTB7-Th, the as-cast OPVs yield PCEs of up to 9.58% with a fill factor of 0.63, an open-circuit voltage of 0.73 V, and a very high short-circuit current of 20.75 mA cm(-2). Owing to the favorable complementary absorption of low-bangap PTB7-Th and small-bandgap ATT-2 in NIR region, the proof-of-concept STOPVs show the highest PCE of 7.7% so far reported for single-junction STOPVs with a high transparency of 37%.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/38512]
专题	化学研究所_有机固体实验室
作者单位	1.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem & Chem Engn, Beijing 100049, Peoples R China 3.Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA 4.Shanghai Jiao Tong Univ, Dept Phys & Astron, Shanghai 200240, Peoples R China 5.Univ Massachusetts, Polymer Sci & Engn Dept, Amherst, MA 01003 USA
推荐引用方式 GB/T 7714	Liu, Feng,Zhou, Zichun,Zhang, Cheng,et al. Efficient Semitransparent Solar Cells with High NIR Responsiveness Enabled by a Small-Bandgap Electron Acceptor[J]. ADVANCED MATERIALS,2017,29(21).
APA	Liu, Feng.,Zhou, Zichun.,Zhang, Cheng.,Zhang, Jianyun.,Hu, Qin.,...&Zhu, Xiaozhang.(2017).Efficient Semitransparent Solar Cells with High NIR Responsiveness Enabled by a Small-Bandgap Electron Acceptor.ADVANCED MATERIALS,29(21).
MLA	Liu, Feng,et al."Efficient Semitransparent Solar Cells with High NIR Responsiveness Enabled by a Small-Bandgap Electron Acceptor".ADVANCED MATERIALS 29.21(2017).