TY - JOUR
T1 - The effects of copper phthalocyanine purity on organic solar cell performance
AU - Salzman, Rhonda F.
AU - Xue, Jiangeng
AU - Rand, Barry P.
AU - Alexander, Alex
AU - Thompson, Mark E.
AU - Forrest, Stephen R.
N1 - Funding Information:
The authors would like to thank Dorothy Little for mass spectroscopy measurements, and John Eng for help with FTIR measurements. Support for this work was provided by the Air Force Office of Scientific Research, Global Photonic Energy Corp., and the National Renewable Energy Laboratory (NREL).
PY - 2005/12
Y1 - 2005/12
N2 - The performance of small-molecular weight organic double heterojunction donor-acceptor bilayer solar cells is studied as a function of the purity of the donor material, copper phthalocyanine (CuPc). We find that the power conversion efficiency under simulated AM1.5G, 1 sun illumination conditions increases from (0.26 ± 0.01)% to (1.4 ± 0.1)% as the CuPc layer purity increases. Concomitant with the improvements in power conversion efficiency, we find that the hole mobility of the unpurified CuPc is nearly three orders of magnitude lower than for purified source material. Mass spectrometry and Fourier transform infrared spectroscopy are used to identify metal-free phthalocyanine as the primary impurity that degrades both device efficiency and hole mobility.
AB - The performance of small-molecular weight organic double heterojunction donor-acceptor bilayer solar cells is studied as a function of the purity of the donor material, copper phthalocyanine (CuPc). We find that the power conversion efficiency under simulated AM1.5G, 1 sun illumination conditions increases from (0.26 ± 0.01)% to (1.4 ± 0.1)% as the CuPc layer purity increases. Concomitant with the improvements in power conversion efficiency, we find that the hole mobility of the unpurified CuPc is nearly three orders of magnitude lower than for purified source material. Mass spectrometry and Fourier transform infrared spectroscopy are used to identify metal-free phthalocyanine as the primary impurity that degrades both device efficiency and hole mobility.
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U2 - 10.1016/j.orgel.2005.09.001
DO - 10.1016/j.orgel.2005.09.001
M3 - Article
AN - SCOPUS:33644505780
SN - 1566-1199
VL - 6
SP - 242
EP - 246
JO - Organic Electronics: physics, materials, applications
JF - Organic Electronics: physics, materials, applications
IS - 5-6
ER -