Double functions of porous TiO2 electrodes on CH3NH3PbI3 perovskite solar cells: Enhancement of perovskite crystal transformation and prohibition of short circuiting
Open Access
- 1 August 2014
- journal article
- conference paper
- Published by AIP Publishing in APL Materials
- Vol. 2 (8) , 081511
Abstract
In order to analyze the crystal transformation from hexagonal PbI2 to CH3NH3PbI3 by the sequential (two-step) deposition process, perovskite CH3NH3PbI3 layers were deposited on flat and/or porous TiO2 layers. Although the narrower pores using small nanoparticles prohibited the effective transformation, the porous-TiO2 matrix was able to help the crystal transformation of PbI2 to CH3NH3PbI3 by sequential two-step deposition. The resulting PbI2 crystals in porous TiO2 electrodes did not deteriorate the photovoltaic effects. Moreover, it is confirmed that the porous TiO2 electrode had served the function of prohibiting short circuits between working and counter electrodes in perovskite solar cells.Keywords
Funding Information
- Japan Science and Technology Agency (3599)
This publication has 18 references indexed in Scilit:
- Perovskite solar cells with a planar heterojunction structure prepared using room-temperature solution processing techniquesNature Photonics, 2013
- Efficient planar heterojunction perovskite solar cells by vapour depositionNature, 2013
- Sequential deposition as a route to high-performance perovskite-sensitized solar cellsNature, 2013
- Efficient inorganic–organic hybrid heterojunction solar cells containing perovskite compound and polymeric hole conductorsNature Photonics, 2013
- Chemical Management for Colorful, Efficient, and Stable Inorganic–Organic Hybrid Nanostructured Solar CellsNano Letters, 2013
- High Open-Circuit Voltage Solar Cells Based on Organic–Inorganic Lead Bromide PerovskiteThe Journal of Physical Chemistry Letters, 2013
- Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide PerovskitesScience, 2012
- Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%Scientific Reports, 2012
- Bifacial dye-sensitized solar cells based on an ionic liquid electrolyteNature Photonics, 2008
- Fabrication of screen‐printing pastes from TiO2 powders for dye‐sensitised solar cellsProgress in Photovoltaics: Research and Applications, 2007