Enhanced stability in semi-transparent PTB7/PC71BM photovoltaic cells
Visualitza/Obre
10.1016/j.solmat.2015.01.026
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/107355
Tipus de documentArticle
Data publicació2015-06-01
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
We studied the performance over time of opaque and semi-transparent PTB7:PC71BM bulk heterojunction solar cells. For unsealed inverted configuration cells we observe that when the isolation from the environment is improved, the degradation observed is dominated by one single exponential decay. We demonstrate that a dielectric multilayer stack of approximately 550 nm provides an isolation that increases the lifetime of the cell close to ten times. In that event the fill factor appears to be the PV parameter dominating cell degradation resulting from a decrease in the shunt resistance. An Impedance analysis we performed indicates that a Warburg element, attributed to the presence of slowly moving charges such as heavy ions, must be included in the description of the experimental data. The contribution from such element increases as the cell degrades in good agreement with a degradation dominated by the corrosive effects from external agents reaching the active layer of the device.
Descripció
© 2015. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
CitacióRomero, P., Betancur, R., Martinez-Otero, A., Elias, X., Mariano, M., Romero, B., Arredondo, B., Vergaz, R., Martorell, J. Enhanced stability in semi-transparent PTB7/PC71BM photovoltaic cells. "Solar energy materials and solar cells", 1 Juny 2015, vol. 137, p. 44-49.
ISSN0927-0248
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
Romero_SolMat_2015.pdf | 1,889Mb | Visualitza/Obre |