Efficient organic photovoltaics using solution-processed,annealing-free TiO2 nanocrystalline particles as an interface modification layer |
| |
| Affiliation: | 1. Institute of Super-microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, China;2. Hunan Key Laboratory for Super-microstructure and Ultrafast Process, School of Physics and Electronics, Central South University, Changsha, Hunan 410083, China;3. College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China;4. Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA;1. School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore;2. Institute of Materials Research and Engineering, 3 Research Link, Singapore;3. School of Chemical & Biomedical Engineering, Nanyang Technological University, Singapore;1. Solar Application Lab, Department of Physics, G. C. University Lahore, Punjab 54000, Pakistan;2. Department of Materials Science and Engineering, University of Delaware, Delaware 19716, USA;3. Department of Physics and Astronomy, University of Delaware, Delaware 19716, USA;4. Pakistan Council of Renewable Energy Technologies, 25, H-9, Islamabad, Pakistan;1. College of Physics and Optoelectronics, Taiyuan University of Technology, Taiyuan 030024, China;2. School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;1. College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou 310018, China;2. College of Mechanical engineering, Hangzhou Dianzi University, Hangzhou 310018, China;3. State Key Lab of Silicon Materials, Zhejiang University, Hangzhou 310027, China;1. School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, PR China;2. School of Chemistry and Chemical Engineering, Beifang University of Nationalities, Yinchuan 750021, PR China |
| |
| Abstract: | A solution-processed, annealing-free TiO2 nanocrystalline particles (TiO2 NPs) as an interface modification layer was inserted in organic photovoltaics (OPVs), in which the widely used polymer poly (3-hexyl thiophene) (P3HT), a low band gap alkoxylphenyl substituted 1,2-b:4,5-b′] dithiophene-based polymer (PBDTPO-DTBO), and a soluble small molecule benzodithiophene derivative (TIBDT) were used as the donor material, respectively. The annealing-free TiO2 NPs could be easily spin-coated upon the surface of organic active layers, and showed comparable properties to thermal-annealed ones. The power conversion efficiencies (PCEs) of OPV devices could be enhanced dramatically with inserting an annealing-free TiO2 NPs layer. The PCEs of OPV devices based on P3HT:PC61BM, PBDTPO-DTBO:PC71BM and TIBDT:PC61BM bulk heterojunctions were improved by 28%, 15% and 27%, respectively, with an annealing-free TiO2 NPs layer, in which the highest PCE of 5.76% was achieved in PBDTPO-DTBO:PC71BM OPVs. The solution-processed, annealing-free TiO2 NPs thin films show great potential applications in the fabrication of large-area OPVs by printing or coating techniques on flexible polymer substrates. In particularly, it would promote to fabricate solution-processed, annealing-free OPV devices with suitable hole transport layer and organic/polymer active materials. |
| |
| Keywords: | Annealing-free Buffer layer Interface Organic photovoltaics |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
