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题名: Toward high open-circuit voltage by smart chain engineering in 2D-conjugated polymer for polymer solar cells
作者: Cheng, Xiao1; Wan, Qun1; Wu, Yue1; Guo, Bing1; Guo, Xia1; Li, Yaowen1; Zhang, Maojie1; Cui, Chaohua1; Li, Yongfang1, 2
关键词: Polymer solar cells ; 2D-conjugated polymer ; Molecular energy levels ; Electron-donating side-chains
刊名: SOLAR ENERGY MATERIALS AND SOLAR CELLS
发表日期: 2016-05-01
卷: 149, 页:162-169
收录类别: SCI
英文摘要: Two electron-donating sides chain (octylthio and methoxy) were strategically attached on BDTT unit to develop two new polymers (PBDTT-OS-TT-EF and PBDTT-OS-TT-CF) as donor materials for polymer solar cells. PBDTT-OS-TT-EF and PBDTT-OS-TT-CF show broad absorption spectra with narrow optical band gap of 1.52 and 1.56 eV, and low-lying HOMO energy level of -5.34 and -5.46 eV, respectively. A high V-oc of 0.92 V was obtained from the PSC devices based on PBDTT-OS-TT-EF. Particularly, the V-oc of PSC device based on PBDTT-OS-TT-CF is as high as 1.00 V, which is the highest value for the devices based on TT-base polymers. The results indicate that the engineering two electron-donating side chains in BDTT unit is an effective strategy to narrow the band-gap and manipulate the energy levels of polymers, which can be potentially applied to design polymer donor materials with high V-oc values. (C) 2016 Elsevier B.V. All rights reserved.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35978
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Soochow Univ, Coll Chem Chem Engn & Mat Sci, Lab Adv Optoelect Mat, Suzhou 215123, Peoples R China
2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China
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