Bae, Seunghwan Park, Joon-Suh Han, Il Ki Shin, Tae Joo Jo, Won Ho 2024-01-20T02:30:24Z 2024-01-20T02:30:24Z 2021-09-01 2017-02 0927-0248 https://pubs.kist.re.kr/handle/201004/123140 The effect of crystal orientation of CH3NH3PbI3 on photovoltaic properties has rarely been studied due to the lack of method to fabricate perovskite films with well-controlled crystal orientation in specific direction. Here, we have controlled the orientation of CH3NH3PbI3 crystal by changing organic precursors (CH3NH3I and CH3NH3CI) and successfully fabricated highly oriented CH3NH3PbI3 crystals with two different orientations to the substrate. When we investigated the effect of crystal orientation on photovoltaic performance using the films with two different crystal orientations, we have realized that the crystal orientation of perovskite is directly related to power conversion efficiency (PCE). The PCE difference due to different crystal orientation is interpreted by the charge transfer lifetime. Faster charge transfer from perovskite layer to charge transport layer exhibits higher J(SC) and PCE. English ELSEVIER SCIENCE BV ELECTRONIC-PROPERTIES HALIDE MOBILITIES TRANSPORT LENGTHS MORPHOLOGY HYSTERESIS ENERGY LAYERS FILMS CH3NH3PbI3 crystal orientation and photovoltaic performance of planar heterojunction perovskite solar cells Article 10.1016/j.solmat.2016.10.019 1 SOLAR ENERGY MATERIALS AND SOLAR CELLS, v.160, pp.77 - 84 SOLAR ENERGY MATERIALS AND SOLAR CELLS 160 77 84 scie scopus 000390072700011 2-s2.0-84992646507 Energy & Fuels Materials Science, Multidisciplinary Physics, Applied Energy & Fuels Materials Science Physics Article ELECTRONIC-PROPERTIES HALIDE MOBILITIES TRANSPORT LENGTHS MORPHOLOGY HYSTERESIS ENERGY LAYERS FILMS CH3NH3PbI3 Perovskite solar cells Crystal orientation Charge transfer