Open AccessStudy of Small Molecule Organic Solar Cells Performance Based on Boron Subphthalocyanine Chloride and C60
Author(s) -
Jhong-Ciao Ke,
YeongHer Wang,
Kan-Lin Chen,
Pao-Hsun Huang,
Chien-Jung Huang
Publication year - 2013
Publication title -
international journal of photoenergy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.426
H-Index - 51
eISSN - 1687-529X
pISSN - 1110-662X
DOI - 10.1155/2013/803126
Subject(s) - boron , energy conversion efficiency , organic solar cell , chloride , molecule , chemistry , matrix (chemical analysis) , analytical chemistry (journal) , materials science , optoelectronics , organic chemistry , polymer , chromatography
The small molecule organic solar cells based on boron subphthalocyanine chloride (SubPc) and C60 by varying the SubPc layer thickness from 3 nm to 21 nm were fabricated. The maximum power conversion efficiency (PCE) of 1.47% was obtained at the 9 nm SubPc layer under 100 mW/cm2 AM1.5G illumination, which is attributed to reach the optimal balance between the light absorption efficiency and the carrier collection efficiency in the device. To increase the open-circuit voltage (Voc) of device, the molybdenum oxide (MoO3) and poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) were inserted between the indium tin oxide and the SubPc layer, respectively. Finally, the Voc of device increased from 0.46 V to 1 V by using MoO3 buffer layer, resulting in the fact that the PCE of device increased from 1.47% to 2.52%
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