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Indian Journal of Engineering and Materials Sciences (IJEMS) >
IJEMS Vol.17 [2010] >
IJEMS Vol.17(5) [October 2010] >
| Title: | Temperature effect on the performance of phthalocyanine based photovoltaic devices |
| Authors: | Kumar, Hemant
Kumar, Pankaj
Chaudhary, Neeraj
Bhardwaj, Ramil
Sharma, G D
Venkatesu, P
Chand, Suresh |
| Keywords: | Organic photovoltaic
Phthalocyanine
Electronic properties
Fill factor
Short circuit current density
Open circuit voltage |
| Issue Date: | Oct-2010 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | In this paper, the
effect of temperature on performance of phthalocyanine based photovoltaic
devices is investigated. Zinc phthalocyanine (ZnPc) and metal free
phthalocyanine (H2Pc) are used as donor whereas fullerene (C60)
is used as an acceptor. Prior to these investigations, the thicknesses of the
active layers are optimized to get the optimum performance. The optimised
device has an efficiency of ~1.4% for ZnPc and ~0.5% for H2Pc at room temperature. Investigations on the optimized
device show that temperature has significant effect on the photovoltaic
performance. Short circuit current density (Jsc)
and fill factor (FF) decrease whereas
open circuit voltage (Voc)
increases with reduction in temperature. The reduction in Jsc has been attributed to the temperature dependent
electronic properties of the active organic layers while the increment in the Voc has been attributed to
the reduction in band bending and increment in built in voltage (Vbi) on lowering of
temperature. In overall the efficiency first increases and then decreases with
reduction in temperature. |
| Page(s): | 358-362 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-1017 (Online); 0971-4588 (Print) |
| Source: | IJEMS Vol.17(5) [October 2010]
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