| 초록 |
Hybrid organic/inorganic perovskite material, CH3NH3PbI3 (=MAPbI3) has received a great deal of attention due to their intrinsic properties such as appropriate band gap, high absorption coefficient, long hole-electron diffusion length. This feature allows for diversity in its device architecture. So far, significant progresses in solar cell performance have been established by virtue of improvement in device structures, including meso-superstructured, mesostructured, and bi-layer architecture. Meanwhile, a planar heterojunction architecture which can avoid the use of mesoporous metal oxide was also reported, where the devices can be fabricated at a low temperature with either n-i-p or p-i-n structure due to the ambipolar semiconducting characteristic of the perovskite. In this talk, we will present our results on efficient planar heterojunction hybrid solar cells employing MAPbI3 and phenyl-C61-butyric acid methyl ester (PCBM) with a power conversion efficiency (PCE) over 17%. |
