STFTYT: A simple and broadly absorbing small molecule for efficient organic solar cells with a very low energy loss
文献类型：期刊论文
| 作者 | Wang, Jian1; Wang, Wengong1,2; Dong, Xinning2; Wang, Guo2; Zhang, Zhi-Guo2; Li, Yongfang2; Shen, Ping1 |
| 刊名 | ORGANIC ELECTRONICS
 |
| 出版日期 | 2018-06-01 |
| 卷号 | 57页码:45-52 |
| 关键词 | A-pi-d-pi-a Small Molecule Pi-conjugated Bridge Organic Solar Cells Photovoltaic Properties Energy Loss |
| ISSN号 | 1566-1199 |
| DOI | 10.1016/j.orgel.2018.02.039 |
| 英文摘要 | A simple and new A-pi-D-pi-A small molecule denoted as STFTYT was designed and synthesized employing spiro [cyclopenta[1,2-b: 5,4-b'] dithiophene-4,9'-fluorene] (STF) as the central donor (D) unit, ethylhexylthiophene as the pi-conjugated bridge, indenedione as the acceptor (A) unit, for application as an electron donor material in solution-processable organic solar cells (OSCs). Results demonstrate that the target material exhibits an incredibly broad absorption extended to 813 nm, a small bandgap of 1.53 eV, and a low-lying HOMO energy level of -5.26 eV. Theory calculations reveal that the shortened pi-bridge is beneficial to improving molecular planarity and enhancing the intramolecular charge transfer (ICT) effect between the donor and acceptor groups, and ultimately contributing to a broad absorption and small bandgap. Bulk-heterojunction OSCs based on STFTYT as donor and PC71BM as acceptor were prepared and the photovoltaic properties were optimized. A considerable power conversion efficiency (PCE) of 6.17% was achieved along with an extremely high open-circuit voltage (V-oc) of 0.97 V and a very low energy loss (E-loss) of 0.56 eV. |
| 语种 | 英语 |
| WOS记录号 | WOS:000429906200007 |
| 出版者 | ELSEVIER SCIENCE BV |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/46049]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Shen, Ping |
| 作者单位 | 1.Xiangtan Univ, Key Lab Green Organ Synth & Applicat Hunan Prov, Key Lab Environm Friendly Chem & Applicat, Minist Educ,Coll Chem, Xiangtan 411105, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang, Jian,Wang, Wengong,Dong, Xinning,et al. STFTYT: A simple and broadly absorbing small molecule for efficient organic solar cells with a very low energy loss[J]. ORGANIC ELECTRONICS,2018,57:45-52. |
| APA | Wang, Jian.,Wang, Wengong.,Dong, Xinning.,Wang, Guo.,Zhang, Zhi-Guo.,...&Shen, Ping.(2018).STFTYT: A simple and broadly absorbing small molecule for efficient organic solar cells with a very low energy loss.ORGANIC ELECTRONICS,57,45-52. |
| MLA | Wang, Jian,et al."STFTYT: A simple and broadly absorbing small molecule for efficient organic solar cells with a very low energy loss".ORGANIC ELECTRONICS 57(2018):45-52. |
入库方式： OAI收割
来源：化学研究所
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