Improved Performance for Inverted Organic Photovoltaics via Spacer between Benzodithiophene and Benzothiazole in Polymers
文献类型：期刊论文
| 作者 | Mohammad, Lal1; Chen, Qilang1; Abu Mitul1; Sun, Jianyuan2; Khatiwada, Devendra1; Vaagensmith, Bjorn1; Zhang, Cheng2; Li, Jing3 ; Qiao, Qiquan1
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| 刊名 | JOURNAL OF PHYSICAL CHEMISTRY C
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| 出版日期 | 2015-08-20 |
| 卷号 | 119期号:33页码:18992-19000 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/acs.jpcc.5b05608 |
| 通讯作者 | Zhang, C (reprint author), S Dakota State Univ, Dept Chem & Biochem, Brookings, SD 57007 USA. |
| 英文摘要 | In this work, the effects of the spacer between benzo[1,2-b;3,4-b']dithiophene (BDT) and dialkoxybenzothiadiazole (ROBT) in polymers were investigated for applications in organic solar cells. Polymer PBDT-2T-ROBT has a bithiophene (2T) spacer between the BDT and ROBT units, whereas PBDT-ROBT is a direct copolymer of BDT and ROBT. The polymer/PC70BM solar cells using both polymers were fabricated and optimized via polymer/fullerene ratio, solvent, and solvent additives. The spacer has significantly improved solar cell performance from 1.28% (V-oc =0.77 V, J(sc) = 3.13 mA/cm(2), FF = 53.11%) to 5.11% (V-oc = 0.66 V, J(sc) = 13.33 mA/cm(2), FF = 58.12%). The X-ray diffraction (XRD) spectra show the PBDT-2T-ROBT/PC70BM blended film is semicrystalline, whereas the PBDT-ROBT/PC70BM film is amorphous. This indicates that the spacer facilitates polymer organization for higher carrier mobility in the film Atomic force microscopy (AFM) topography and phase images show that PBDT-2T-ROBT/PC70BM films form fibrillar networks, whereas PBDT-ROBT/PC70BM films exhibit larger granular morphology. The photoinduced charge extraction by linearly increasing voltage (Photo-CELIV) measurements show that PBDT-2T-ROBT/PC70BM has a mobility-of 9.59 x 10(-5) cm(2)/(V.s), which is higher than the mobility of 8.64 x 10(-5) cm(2)/(V.s) for PBDT ROBT/PC70BM film. |
| 资助项目 | NSF CAREER[ECCS-0950731] ; NASA EPSCoR[NNX13AD31A] ; NSF MRI[1229577] ; NSF MRI[1428992] |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000360026200019 |
| 出版者 | AMER CHEMICAL SOC |
| 源URL | [http://119.78.100.138/handle/2HOD01W0/1865]  |
| 专题 | 机器人与3D打印技术创新中心 |
| 通讯作者 | Zhang, Cheng |
| 作者单位 | 1.S Dakota State Univ, Dept Elect Engn, Ctr Adv Photovolta, Brookings, SD 57007 USA 2.S Dakota State Univ, Dept Chem & Biochem, Brookings, SD 57007 USA 3.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Chongqing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mohammad, Lal,Chen, Qilang,Abu Mitul,et al. Improved Performance for Inverted Organic Photovoltaics via Spacer between Benzodithiophene and Benzothiazole in Polymers[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2015,119(33):18992-19000. |
| APA | Mohammad, Lal.,Chen, Qilang.,Abu Mitul.,Sun, Jianyuan.,Khatiwada, Devendra.,...&Qiao, Qiquan.(2015).Improved Performance for Inverted Organic Photovoltaics via Spacer between Benzodithiophene and Benzothiazole in Polymers.JOURNAL OF PHYSICAL CHEMISTRY C,119(33),18992-19000. |
| MLA | Mohammad, Lal,et al."Improved Performance for Inverted Organic Photovoltaics via Spacer between Benzodithiophene and Benzothiazole in Polymers".JOURNAL OF PHYSICAL CHEMISTRY C 119.33(2015):18992-19000. |
入库方式： OAI收割
来源：重庆绿色智能技术研究院
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