VNU-UET Repository: No conditions. Results ordered -Date Deposited. 2024-03-29T07:27:56ZEPrintshttp://eprints.uet.vnu.edu.vn/images/sitelogo.pnghttps://eprints.uet.vnu.edu.vn/eprints/2018-11-15T09:19:47Z2018-11-15T09:19:47Zhttp://eprints.uet.vnu.edu.vn/eprints/id/eprint/3019This item is in the repository with the URL: http://eprints.uet.vnu.edu.vn/eprints/id/eprint/30192018-11-15T09:19:47ZSolution-Processible Crystalline NiO Nanoparticles for High-Performance Planar Perovskite Photovoltaic CellsIn this work, we report on solution-based p-i-n-type planar-structured CH3NH3PbI3 perovskite
photovoltaic (PV) cells, in which pre-crystallized NiO nanoparticles (NPs) without post-treatment are
used to form a hole transport layer (HTL). X-ray diffraction and high-resolution transmission electron
microscopy showed the crystallinity of the NPs, and atomic force microscopy and scanning electron
microscopy confirmed the uniform surfaces of the resultant NiO thin film and the subsequent perovskite
photoactive layer. Compared to the conventional poly(3,4-ethylene dioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) HTL, the NiO HTL had excellent energy-level alignment with that of CH3NH3PbI3
and improved electron-blocking capability, as analyzed by photoelectron spectroscopy and diode
modeling, resulting in Voc ~0.13 V higher than conventional PEDOT:PSS-based devices. Consequently, a
power conversion efficiency (PCE) of 15.4% with a high fill factor (FF, 0.74), short-circuit current density
(Jsc, 20.2 mA·cm−2), and open circuit voltage (Voc, 1.04 V) having negligible hysteresis and superior air
stability has been achieved.Uisik KwonBong-Gi KimDuc Cuong Nguyencuongnd@vnu.edu.vnJong-Hyeon ParkNa Young HaSeung-Joo KimSeung Hwan KoSoonil Leesoonil@ajou.ac.krDaeho Leedhl@gachon.ac.krHui Joon Parkhuijoon@ajou.ac.kr