A naphthodithieno[3,2-b]thiophene-based copolymer as a novel third component in ternary polymer solar cells with a simultaneously enhanced open circuit voltage, short circuit current and fill factor
文献类型：期刊论文
| 作者 | Sun, Yuqian1; Guo, Biao1; Chen, Youchun1; Zhang, Weifeng2; Li, Xiang1; Yu, Gui2; Li, Fenghong1 |
| 刊名 | NEW JOURNAL OF CHEMISTRY
 |
| 出版日期 | 2018-04-07 |
| 卷号 | 42期号:7页码:5314-5322 |
| ISSN号 | 1144-0546 |
| DOI | 10.1039/c8nj00307f |
| 英文摘要 | A dialkoxyl-substituted naphthodithieno[3,2-b]thiophene-based copolymer (PV12) was applied as a third component for ternary polymer solar cells (PSCs) based on PCDTBT1-x:PV12(x):PC71BM. In Al-only ternary PSCs with x = 0.15, a power conversion efficiency (PCE) of 6.73% was achieved due to simultaneous enhancement in the open circuit voltage, short circuit current and fill factor, which is much higher than the PCE of 5.28% for Al-only binary PSCs based on PCDTBT: PC71BM and 2.93% for Al-only binary PSCs based on PV12:PC71BM. The PCE reached 7.69% when IIDTh-NSB as a cathode interlayer was introduced between the ternary active layer and Al. Ultraviolet photoemission spectroscopy measurements demonstrated a cascade-type energy level alignment at the ternary PCDTBT(D1)/PV12(D2)/PC71BM(A) junction. As a result, the voltage limitation was overcome at the D1/D2/A junction. Ultraviolet-visible absorption and external quantum efficiency spectra showed that PV12 had complementary absorption to PCDTBT in the solar spectrum. Atomic force microscopy and transmission electron microscopy images showed that the morphology and phase separation of the active layer were optimized by adding PV12. Photoluminescence spectral investigations suggested that the Forster resonance energy transfer from PCDTBT to PV12 occurred in the ternary PSCs under illumination. Finally, the PCEs of the ternary PSCs are not as sensitive to the thickness of the active layer as those of the binary PSCs, which is important for the roll-to-roll coating processing of organic photovoltaic modules. |
| 语种 | 英语 |
| WOS记录号 | WOS:000429055100060 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46143]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Fenghong |
| 作者单位 | 1.Jilin Univ, Inst Theoret Chem, State Key Lab Supramol Struct & Mat, Changchun 130012, Jilin, Peoples R China 2.Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Yuqian,Guo, Biao,Chen, Youchun,et al. A naphthodithieno[3,2-b]thiophene-based copolymer as a novel third component in ternary polymer solar cells with a simultaneously enhanced open circuit voltage, short circuit current and fill factor[J]. NEW JOURNAL OF CHEMISTRY,2018,42(7):5314-5322. |
| APA | Sun, Yuqian.,Guo, Biao.,Chen, Youchun.,Zhang, Weifeng.,Li, Xiang.,...&Li, Fenghong.(2018).A naphthodithieno[3,2-b]thiophene-based copolymer as a novel third component in ternary polymer solar cells with a simultaneously enhanced open circuit voltage, short circuit current and fill factor.NEW JOURNAL OF CHEMISTRY,42(7),5314-5322. |
| MLA | Sun, Yuqian,et al."A naphthodithieno[3,2-b]thiophene-based copolymer as a novel third component in ternary polymer solar cells with a simultaneously enhanced open circuit voltage, short circuit current and fill factor".NEW JOURNAL OF CHEMISTRY 42.7(2018):5314-5322. |
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来源：化学研究所
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