Photovoltaic devices employing ternary PbSxSe1-x nanocrystals.
We report solar cells based on highly confined nanocrystals of the ternary compound PbS(x)Se(1-x). Crystalline, monodisperse alloyed nanocrystals are obtained using a one-pot, hot injection reaction. Rutherford back scattering and energy-filtered transmission electron microscopy suggest that the S and Se anions are uniformly distributed in the alloy nanoparticles. Photovoltaic devices made using ternary nanoparticles are more efficient than either pure PbS or pure PbSe based nanocrystal devices.
Department of Chemistry, University of California, Berkeley, California, and Lawrence Berkeley National Laboratory, Berkeley, California, USA.
Wanli
W
Ma
Joseph M
JM
Luther
Haimei
H
Zheng
Yue
Y
Wu
A Paul
AP
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