International Journal of Optics and Photonics
IJOP
Basic Sciences
http://ijop.ir
1
admin
1735-8590
2538-4007
10.52547/ijop
1735-8590
en
jalali
1392
10
1
gregorian
2014
1
1
8
1
online
1
fulltext
en
Improvement of light harvesting by inserting an optical spacer (ZnO) in polymer bulk heterojunction solar cells: A theoretical and experimental study
تخصصي
Special
پژوهشي
Research
By introducing a thin ZnO layer as an optical spacer, we have demonstrated that inserting this layer between an active layer and a reflective electrode results in a re-distribution of the optical electric field inside bulk heterojunction solar cells. A theoretical analysis by optical modeling showed that the thin ZnO layer could shift the position of the maximum of the electric field into the absorbing layer. Theoretical calculations were compared with experimental results for devices with and without an optical spacer. By using a ZnO optical spacer layer, a significant increase was observed in the short circuit current density of J-V curves. This increase might be due to harvesting more lights and also hole-blocking by the ZnO layer. Both electrical and optical characteristics of the device provided improved results in the power conversion efficiency of the bulk heterojunction solar cell up to 3.49%.
Bulk-heterojunction, Optical spacer, Optical modeling, Polymer solar cells, ZnO nanoparticle
3
11
http://ijop.ir/browse.php?a_code=A-10-387-1&slc_lang=en&sid=1
Abbas
Behjat
abehjat@yazd.ac.ir
1003194753284600959
1003194753284600959
Yes
Yazd University
Naeimeh
Torabi
ntorabi.k@gmail.com
1003194753284600960
1003194753284600960
No
Yazd University
Fatemeh
Dossthosseini
fdoosthossieni@ymail.com
1003194753284600961
1003194753284600961
No
Yazd University