TY - JOUR
T1 - Induced photodegradation of quinoxaline based copolymers for photovoltaic applications.
AU - Gedefaw, Desta
AU - Tessarolo, Marta
AU - Prosa, Mario
AU - Bolognesi, Margherita
AU - Henriksson, Patrik
AU - Zhuang, Wenliu
AU - Seri, Mirko
AU - Muccini, Michele
AU - Andersson, Mats R.
PY - 2016/1/1
Y1 - 2016/1/1
N2 - We report here the synthesis and characterization of a series of p-type copolymers, which combine a fluorinated quinoxaline (FQ) acceptor unit either with a differently substituted benzodithiophene (BDT) or an unsubstituted thieno[3,2-b]thiophene (TT). The effect of the structural modifications on the photochemical stability of the resulting films is investigated and then correlated with the photovoltaic performance and lifetime measurements of corresponding photovolatic devices. To this end, we firstly studied the intrinsic stability of each polymer film by monitoring the UV-vis absorption decay, under simulated sunlight, as a function of ageing time. Bulk heterojunction solar cells, based on these polymers as donor materials, were fabricated and tested. Beside the initial values, we monitored the photovoltaic performance during prolonged light soaking in order to evaluate and compare the photostability of more complex systems such as working solar cells.
AB - We report here the synthesis and characterization of a series of p-type copolymers, which combine a fluorinated quinoxaline (FQ) acceptor unit either with a differently substituted benzodithiophene (BDT) or an unsubstituted thieno[3,2-b]thiophene (TT). The effect of the structural modifications on the photochemical stability of the resulting films is investigated and then correlated with the photovoltaic performance and lifetime measurements of corresponding photovolatic devices. To this end, we firstly studied the intrinsic stability of each polymer film by monitoring the UV-vis absorption decay, under simulated sunlight, as a function of ageing time. Bulk heterojunction solar cells, based on these polymers as donor materials, were fabricated and tested. Beside the initial values, we monitored the photovoltaic performance during prolonged light soaking in order to evaluate and compare the photostability of more complex systems such as working solar cells.
KW - Conjugated polymers
KW - Lifetime
KW - Photodegradation
KW - Polymer solar cells
UR - http://www.scopus.com/inward/record.url?scp=84941787415&partnerID=8YFLogxK
U2 - 10.1016/j.solmat.2015.08.015
DO - 10.1016/j.solmat.2015.08.015
M3 - Article
VL - 144
SP - 150
EP - 158
JO - Solar Energy Materials and Solar Cells
JF - Solar Energy Materials and Solar Cells
SN - 0927-0248
ER -