DataVXAPL MaterialsPaper
journal article·2014-08-01Open access

Double functions of porous TiO2 electrodes on CH3NH3PbI3 perovskite solar cells: Enhancement of perovskite crystal transformation and prohibition of short circuiting

Govindhasamy Murugadoss, Gai Mizuta, Soichiro Tanaka, Hitoshi Nishino, Tomokazu Umeyama, Hiroshi Imahori, Seigo Ito

APL Materials· Volume 2· Issue 8
Publisher pageOpen full text
Source abstract

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.
Source: crossref · Quality: baseline

Research context

NanomaterialsElectronic materialsMaterials processing

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Quantum Dots Synthesis And Properties

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

University of Hyogo 1 Department of Electric Engineering and Computer Science, School of Engineering, , 2167 Shosha, Himeji, Hypogo 671-2280, Japan

Osaka Gas Co., Ltd. 2 Energy Technology Laboratories, , 6-19-9 Torishima Konohana-Ku, Osaka 554-0051, Japan

Kyoto University 3 Department of Molecular Engineering, Graduate School of Engineering, , Nishikyo-ku, Kyoto 615-8510, Japan

Kyoto University 4 Institute for Integrated Cell-Material Sciences (WPI-iCeMS), , Nishikyo-ku, Kyoto 615-8510, Japan

Funding

Japan Science and Technology Agency

References (18)

Show source-provided references
1. Sci. Rep. · 2012 · 2 · 59110.1038/srep00591 ↗
2. Nano Lett. · 2013 · 13 · 176410.1021/nl400349b ↗
3. Science · 2012 · 338 · 64310.1126/science.1228604 ↗
4. Nano Lett. · 2014 · 14 · 324710.1021/nl500627x ↗
5. Nat. Photon. · 2013 · 7 · 48610.1038/nphoton.2013.80 ↗
6. ChemPhysChem · 2014 · 15 · 119410.1002/cphc.201301047 ↗
7. Effects of Surface Blocking Layer of Sb2S3 on Nanocrystalline TiO2 for CH3NH3PbI3 Perovskite Solar Cells10.1021/jp500449z ↗
8. Nature (London) · 2013 · 499 · 31610.1038/nature12340 ↗
9. Nat. Photon. · 2014 · 8 · 13310.1038/nphoton.2013.342 ↗
10. Nano Lett. · 2014 · 14 · 259110.1021/nl500399m ↗
11. Nat. Commun. · 2014 · 5 · 383410.1038/ncomms4834 ↗
12. Nature (London) · 2013 · 501 · 39510.1038/nature12509 ↗
13. J. Am. Chem. Soc. · 2014 · 136 · 62210.1021/ja411509g ↗
14. J. Phys. Chem. Lett. · 2013 · 4 · 89710.1021/jz400348q ↗
15. J. Am. Chem. Soc. · 2014 · 136 · 75810.1021/ja411014k ↗
16. Nat. Photon. · 2008 · 2 · 69310.1038/nphoton.2008.224 ↗
17. Prog. Photovolt.: Res. Appl. · 2007 · 15 · 60310.1002/pip.768 ↗
18. Nano · 2014 · 9 · 144001010.1142/S1793292014400104 ↗