دورية أكاديمية
Effect of asymmetric solubility of diketopyrrolopyrrole-based polymers and PC71BMs in a binary solvent system on the performance of bulk heterojunction solar cells
| العنوان: | Effect of asymmetric solubility of diketopyrrolopyrrole-based polymers and PC71BMs in a binary solvent system on the performance of bulk heterojunction solar cells |
|---|---|
| المؤلفون: | Son, Seon Kyoung, Lee, Hyo-Sang, Ha, Jae Seung, Kim, Kyung Hwan, Son, Hae Jung, Ko, Min Jae, Kim, Honggon, Lee, Doh-Kwon, Kim, Jin Young, Lee, Wonmok, Park, Sungnam, Choi, Dong Hoon, Kim, BongSoo |
| بيانات النشر: | ELSEVIER SCIENCE BV |
| سنة النشر: | 2014 |
| المجموعة: | ScholarWorks@UNIST (Ulsan National Institute of Science and Technology) |
| الوصف: | In this study, we demonstrated the effective morphological control of polymer:fullerene blends using three separate solvent systems: chloroform (CF), CF:1,8-diiodooctane (DIO), and CF:o-dichlorobenzene (ODCB). The polymer:fullerene blends are composed of two diketopyrrolopyrrole (DPP)-based polymers of P(DPP-alt-QT) and P(DPP-alt-DTBSe) and a fullerene derivative of [6,6]-phenyl-C71-butyric acid methyl ester (PC71BM), i.e., P(DPP-alt-QT):PC71BM or P(DPP-alt-DTBSe):PCTIBM. The CF:ODCB binary solvent exhibited the best photovoltaic performance among the three solvent systems for both polymer-based devices, although the CF:DIO also exhibited an improved performance compared to the CF system. By examining film morphology of the blend films, we found that the CF:ODCB enabled the most optimal nanoscale phase separation and the morphological features were strongly affected by the solubility of each material in the high boiling-point (BP) solvent. Specifically, the polymers have limited but slightly higher solubility in ODCB than in DIO, while the PC71BM molecules have a high solubility in both DIO and ODCB. Therefore, this work highlights that the optimally asymmetric solubility of each photoactive component in the high BP solvent is a critical factor to form the nanoscale, bicontinuous domains in the blend films and thereby to determine the performance of photovoltaic devices. |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| تدمد: | 0927-0248 |
| العلاقة: | SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.124, pp.232 - 240; https://scholarworks.unist.ac.kr/handle/201301/24847Test; 3704; 30926; 2-s2.0-84897821422; 000335111000030; https://www.sciencedirect.com/science/article/pii/S0927024814000907?via%3DihubTest |
| DOI: | 10.1016/j.solmat.2014.02.011 |
| الإتاحة: | https://doi.org/10.1016/j.solmat.2014.02.011Test https://scholarworks.unist.ac.kr/handle/201301/24847Test https://www.sciencedirect.com/science/article/pii/S0927024814000907?via%3DihubTest |
| رقم الانضمام: | edsbas.7C143A2D |
| قاعدة البيانات: | BASE |
| تدمد: | 09270248 |
|---|---|
| DOI: | 10.1016/j.solmat.2014.02.011 |