TY - JOUR
T1 - Application of an Open-Circuit Voltage Decay Model to Compare the Performances of Donor Polymers in Bulk Heterojunction Solar Cells
AU - Torto, Lorenzo
AU - Cester, Andrea
AU - Wrachien, Nicola
AU - Rizzo, Antonio
AU - Gedefaw, Desta Antenehe
AU - Andersson, Mats R.
AU - Seri, Mirko
AU - Muccini, Michele
PY - 2018/3
Y1 - 2018/3
N2 - We analyzed several polymeric solar cells fabricated by using four different donor polymers. On each device, we performed photocurrent, external quantum efficiency, and open-circuit voltage-decay transient measurements. A model was developed to explain the open-circuit voltage decay, which provided insight about the recombination mechanisms in the active layer and about the band diagram of the organic solar cell blend. By analyzing and comparing the data obtained with the open-circuit voltage-decay transient and the conventional dc measurements in the four polymers, the origin of lower performance in some devices was identified.
AB - We analyzed several polymeric solar cells fabricated by using four different donor polymers. On each device, we performed photocurrent, external quantum efficiency, and open-circuit voltage-decay transient measurements. A model was developed to explain the open-circuit voltage decay, which provided insight about the recombination mechanisms in the active layer and about the band diagram of the organic solar cell blend. By analyzing and comparing the data obtained with the open-circuit voltage-decay transient and the conventional dc measurements in the four polymers, the origin of lower performance in some devices was identified.
KW - Carrier lifetime
KW - open-circuit voltage decay (OCVD)
KW - organic electronics
KW - polymeric solar cells
UR - http://www.scopus.com/inward/record.url?scp=85041500087&partnerID=8YFLogxK
U2 - 10.1109/JPHOTOV.2018.2792461
DO - 10.1109/JPHOTOV.2018.2792461
M3 - Article
SN - 2156-3381
VL - 8
SP - 517
EP - 524
JO - IEEE Journal of Photovoltaics
JF - IEEE Journal of Photovoltaics
IS - 2
ER -
