Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Performance characteristics of polymer photovoltaic solar cells with an additiveincorporated active layer | Kim et al. Nanoscale Research Letters 2012 7 56 http content 7 1 56 o Nanoscale Research Letters a SpringerOpen Journal NANO IDEA Open Access Performance characteristics of polymer photovoltaic solar cells with an additiveincorporated active layer Hyomin Kim Sunseong Ok Hyunhee Chae and Youngson Choe Abstract We have investigated the performance characteristics of bulk-heterojunction polymer solar cells based on poly 3-hexylthiophene-2 5-diyl and 6 6 -phenyl C61 butyric acid methyl ester by adding 1 8-octanedithiol as a processing agent in an active layer. The effects of the additive 1 8-octanedithiol on the device performance parameter characteristics have been discussed. The current density-voltage measurements UV-Vis absorption spectra X-ray diffraction spectra and scanning probe microscope images have been used to discuss the performance characteristics of polymer solar cells. Keywords bulk heterojunction power conversion efficiency polymer solar cell excitons Background Clean and renewable energies have been considerable issues in the last decade. For this reason organic photovoltaic cells have been attractive devices as next-generation substitute energy sources 1-4 . Currently the power conversion efficiencies of organic photovoltaic cells have been steadily improved around 6 through polymer solar cells 5 . There have been reports that polymer solar cells have many advantages of cost-effectiveness in the fabrication process and the mechanical flexibility and polymeric materials provide a wide field of applications 6 7 . Bulk-heterojunction BHJ solar cells based on phase-separated blends of polymer semiconductors and fullerene derivatives typically consist of a conjugated polymer poly 3-hexylthiophene-2 5-diyl P3HT as an electron donor and fullerene derivatives 6 6 -phenyl C61 butyric acid methyl ester PCBM as an electron acceptor 8-12 . Especially P3HT has attracted lots of interest due to its high crystallinity and self-assembling .
