학회 | 한국재료학회 |
학술대회 | 2014년 가을 (11/27 ~ 11/28, 대전컨벤션센터) |
권호 | 20권 2호 |
발표분야 | B. 나노 재료(Nanomaterials) |
제목 | Enhanced Efficiency Using Cu@Cu2O Core-Shell Nanostructures in Inverted Organic Solar Cells |
초록 | Inverted organic solar cells (IOSCs) based on composites of an electron-donating conjugated polymers and an electron-accepting fullerenes offer a promising alternative for the development of a low-cost, printable, portable and flexible photovoltaic technology. To increase the efficiency of the IOSCs, the oxide interlayer, such as p-type NiO, V2O5, WO3, Cu2O and MoO3 have been applied to the organic solar cell as an electron blocking layer. The Cu2O leads to the better hole transportation at the organic/inorganic interface because the work function of copper oxide is close to HOMO of P3HT. The Cu2O is a good selection for the solution based metal oxide layer. Here, we added concept that light absorbance of active layer increase by light reflection of Cu nanoparticles in electron block. In the present work, to explore the buffer layers using Cu@Cu2O core/shell structure on solar cell performance, we have fabricated IOSCs based on poly(3-hexylthiophene) (P3HT) and [6, 6]-phenyl C61-butyric acid methyl ester (PC60BM) with Cu@Cu2O thin films. First, we controlled Cu2O thickness by the oxidation times of Cu nanoparticles in hexane solution. This Cu@Cu2O thin film act as electron blocking layers were deposited simply on active layer by spin coating using solution of different oxidation times. This work apparently confirms Jsc effect of the IOSCs that Cu nanoparticles supply more the light absorption in active layer. |
저자 | Hye-Jeong Park, Gyu Cheol Yoon, Kyung-Sik Shin, Sang-Woo Kim |
소속 | Sungkyunkwan Univ. |
키워드 | Cu@Cu2O; hole transport layer; inverted organic solar cell |