Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.


Issue 45, 2016
Previous Article Next Article

Highly efficient CH3NH3PbI3−xClx mixed halide perovskite solar cells prepared by re-dissolution and crystal grain growth via spray coating

Author affiliations

Abstract

We fabricated highly efficient planar type CH3NH3PbI3−xClx (MAPbI3−xClx) mixed halide perovskite solar cells via spray coating with a controlled composition of the solvents. The cells had a power conversion efficiency of 17.8% (forward scan), 18.3% (reverse scan), and 16.08 ± 1.28% (average) for unit cells under 1 Sun conditions. We controlled the ratio of DMF (dimethylformamide), a quickly evaporating solvent, and GBL (γ-butyrolactone), a slowly evaporating solvent, to 10 : 0, 9 : 1, 8 : 2, and 7 : 3 (vol : vol). We obtained the largest MAPbI3−xClx mixed halide perovskite crystal grains in the 8 : 2 sample because the inward flux of the spray solution was balanced with the outward flux of the evaporating solvent. Consequently, the moistened underlying polycrystalline perovskite film with small crystal grains re-dissolved and merged into larger crystalline grains by re-crystallization. By controlling the re-dissolution and crystal grain growth of the MAPbI3−xClx mixed halide perovskite film via spray coating, we fabricated a sub-module (10 cm × 10 cm, active area = 40 cm2) with 10.5 V open circuit voltage, 84.15 mA short circuit current, 70.16% fill factor, and 15.5% power conversion efficiency under 1 Sun conditions.

Graphical abstract: Highly efficient CH3NH3PbI3−xClx mixed halide perovskite solar cells prepared by re-dissolution and crystal grain growth via spray coating

Back to tab navigation

Supplementary files

Article information


Submitted
05 Aug 2016
Accepted
20 Sep 2016
First published
20 Sep 2016

J. Mater. Chem. A, 2016,4, 17636-17642
Article type
Communication

Highly efficient CH3NH3PbI3−xClx mixed halide perovskite solar cells prepared by re-dissolution and crystal grain growth via spray coating

J. H. Heo, M. H. Lee, M. H. Jang and S. H. Im, J. Mater. Chem. A, 2016, 4, 17636
DOI: 10.1039/C6TA06718B

Social activity

Search articles by author

Spotlight

Advertisements