Format

Send to

Choose Destination
Nano Lett. 2013 Jun 12;13(6):2412-7. doi: 10.1021/nl400286w. Epub 2013 May 16.

High efficiency solid-state sensitized solar cell-based on submicrometer rutile TiO2 nanorod and CH3NH3PbI3 perovskite sensitizer.

Author information

1
School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea.

Abstract

We report a highly efficient solar cell based on a submicrometer (~0.6 μm) rutile TiO2 nanorod sensitized with CH3NH3PbI3 perovskite nanodots. Rutile nanorods were grown hydrothermally and their lengths were varied through the control of the reaction time. Infiltration of spiro-MeOTAD hole transport material into the perovskite-sensitized nanorod films demonstrated photocurrent density of 15.6 mA/cm(2), voltage of 955 mV, and fill factor of 0.63, leading to a power conversion efficiency (PCE) of 9.4% under the simulated AM 1.5G one sun illumination. Photovoltaic performance was significantly dependent on the length of the nanorods, where both photocurrent and voltage decreased with increasing nanorod lengths. A continuous drop of voltage with increasing nanorod length correlated with charge generation efficiency rather than recombination kinetics with impedance spectroscopic characterization displaying similar recombination regardless of the nanorod length.

PMID:
23672481
DOI:
10.1021/nl400286w

Supplemental Content

Full text links

Icon for American Chemical Society
Loading ...
Support Center