Open AccessIn-situ facile deposition of TiO2 hole blocking layers for efficient hole-conductor-free perovskite solar cells
Publication year - 2018
Publication title -
advanced applied materials
Language(s) - English
Resource type - Journals
ISSN - 2003-0789
DOI - 10.36822/adv.app.mater.20180201
Subject(s) - materials science , conductor , optoelectronics , layer (electronics) , perovskite (structure) , energy conversion efficiency , deposition (geology) , perovskite solar cell , electrode , annealing (glass) , chemical engineering , nanotechnology , composite material , chemistry , paleontology , sediment , engineering , biology
A compact hole blocking layer is necessary for high efcient perovskite solar cell, which was usually fabricated by spin coating or spray pyrolysis with the followed annealing process, or vacuum deposition. Here, we deposited TiO2 compact layers by an in-situ room-temperature solvent method, which were applied as an effective hole blocking layer for hole-conductor-free perovskite solar cells with carbon electrodes. The thickness of the TiO2 compact layer can be easily regulated by the depositing time. By optimizing the TiO2 depositing time, the power conversion efficiency of hole-conductor-free perovskite solar cells was up to 10.66%.