Digital Repository

Stability of the performance of inverted P3HT/PCBM based organic solar cells

Show simple item record

dc.contributor.author Weerasinghe, M. L. A.
dc.contributor.author Wanninayake, W. T. M. A. P. K.
dc.contributor.author Jayathilaka, K. M. D. C.
dc.contributor.author Wijesundera, R. P.
dc.date.accessioned 2021-11-28T02:57:36Z
dc.date.available 2021-11-28T02:57:36Z
dc.date.issued 2021
dc.identifier.citation Weerasinghe, M. L. A, Wanninayake, W. T. M. A. P. K, Jayathilaka, K. M. D. C. & Wijesundera, R. P. (2021) Stability of the performance of inverted P3HT/PCBM based organic solar cells, Proceedings of the International Conference on Applied and Pure Sciences (ICAPS 2021-Kelaniya)Volume 1,Faculty of Science, University of Kelaniya, Sri Lanka.Pag.53 en_US
dc.identifier.issn 2815-0112
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/23947
dc.description.abstract The organic solar cell extracts and converts solar energy to electricity without environmental hazardous including global warming. Bulk heterojunction (BHJ) structure of the organic solar cells (OSCs) have higher performance than the layered structure. But the main disadvantage of the OSCs is the poor stability of the device. Therefore, this study was focused on the stability of fabricated P3HT/PCBM OSCs. A series of inverted organic solar cells were fabricated on titanium substrate using spin coated P3HT/PCBM, doctor bladed PEDOT: PSS and sputter coated Au. Device characterizations were carried out under AM 1.5 illumination during 20 days. Electrical parameters of open-circuit voltage (VOC), short circuit current density (JSC), fill factor (FF) and power conversion efficiency (PCE) were obtained during 20 days from dark and light I-V measurements. Best device produced VOC of 282 mV, JSC of 2.65 mAcm-2, FF of 0.21 and PCE of 0.15%. The PCE decreased dramatically and became almost constant value of 0.04% within 20 days. FF was constant throughout the 20 days and VOC decreased slightly within 20 days. However, JSC of the device decay from 2.65 mA/cm2 to 1.0 mA/cm2 within the considered time duration. Hence, this PCE behavior of the device is due to the loss of JSC. PCE of the organic solar cell is not higher than the silicon solar cell, but it can be improved by changing the geometry of the solar cell, annealing conditions, etc. This instability of the device upon irradiation is due to photochemical and photophysical degradation in the active layer, and the active layer/electrode interface. Further, low JSC is mainly due to the low electron mobility and low exciton diffusion length. Performance of the device can be improved carefully controlling the device fabrication parameters in the inert gas surrounding. en_US
dc.publisher Faculty of Science, University of Kelaniya, Sri Lanka en_US
dc.subject OSC, P3HT/PCBM, Bulk heterojunction, Stability en_US
dc.title Stability of the performance of inverted P3HT/PCBM based organic solar cells en_US


Files in this item

This item appears in the following Collection(s)

Show simple item record

Search Digital Repository


Browse

My Account