Solar Cells Based on Junctions between Colloidal PbSe Nanocrystals and Thin ZnO Films

We report a new type of excitonic solar cell based on planar heterojunctions between PbSe semiconductor nanocrystals and thin ZnO films. These solar cells generate large photocurrents and higher photovoltages compared to Schottky cells assembled with similar nanocrystal films. When illuminated with...

Full description

Saved in:
Bibliographic Details
Published inACS nano Vol. 3; no. 11; pp. 3638 - 3648
Main Authors Leschkies, Kurtis S, Beatty, Timothy J, Kang, Moon Sung, Norris, David J, Aydil, Eray S
Format Journal Article
LanguageEnglish
Published United States American Chemical Society 24.11.2009
Subjects
quantum dot
nanocrystal
PbSe
excitonic solar cell
ZnO
solar cell
Online AccessGet full text

Cover

More Information
Summary:We report a new type of excitonic solar cell based on planar heterojunctions between PbSe semiconductor nanocrystals and thin ZnO films. These solar cells generate large photocurrents and higher photovoltages compared to Schottky cells assembled with similar nanocrystal films. When illuminated with 100 mW/cm2 simulated AM1.5 spectrum, these solar cells exhibit short-circuit currents between 12 and 15 mA/cm2, open-circuit voltages up to 0.45 V, and a power conversion efficiency of 1.6%. The photovoltage depends on the size of the nanocrystals, increasing linearly with their effective band gap energy.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1936-0851
1936-086X
DOI:10.1021/nn901139d