TY - JOUR
T1 - Naphtho[1,2-b:5,6-b′]dithiophene-based copolymers for applications to polymer solar cells
AU - Bathula, Chinna
AU - Song, Chang Eun
AU - Badgujar, Sachin
AU - Hong, Seong Jin
AU - Park, Song Yi
AU - Shin, Won Suk
AU - Lee, Jong Cheol
AU - Cho, Shinuk
AU - Ahn, Taek
AU - Moon, Sang Jin
AU - Lee, Sang Kyu
PY - 2013/3/21
Y1 - 2013/3/21
N2 - Two naphtho[1,2-b:5,6-b′]dithiophene-based copolymers, poly[4,9-bis(2-ethylhexyloxy)naphtho[1,2-b:5,6-b′]dithiophene-2, 7-diyl-alt-[4,6-{(1-thieno[3,4-b]thiophen-2-yl)-2-ethylhexan-1-one}] (P1) and poly[4,9-bis(2-ethylhexyloxy)naphtho[1,2-b:5,6-b′]dithiophene-2, 7-diyl-alt-[4,6-{(1-(3-fluorothieno[3,4-b]thiophen)-2-yl)-2-ethylhexan-1-one}] (P2), were designed and synthesized for use in polymer solar cells (PSCs). We systematically investigated the synthesis, thermal stability, optical and electrochemical properties, field-effect carrier mobilities, and photovoltaic characteristics of these polymers. The field-effect mobilities of P1 and P2 were determined to be 5.8 × 10-4 and 1.2 × 10-3 cm2 V-1 s-1, respectively. Among the naphtho[1,2-b:5,6-b′]dithiophene-based copolymers studied here, P2 showed the best photovoltaic performance, with an open-circuit voltage (Voc) of 0.71 V, a short-circuit current density (Jsc) of 13.52 mA cm -2, a fill factor (FF) of 0.51, and a power conversion efficiency of 4.88% under AM 1.5 irradiation (100 mW cm-2).
AB - Two naphtho[1,2-b:5,6-b′]dithiophene-based copolymers, poly[4,9-bis(2-ethylhexyloxy)naphtho[1,2-b:5,6-b′]dithiophene-2, 7-diyl-alt-[4,6-{(1-thieno[3,4-b]thiophen-2-yl)-2-ethylhexan-1-one}] (P1) and poly[4,9-bis(2-ethylhexyloxy)naphtho[1,2-b:5,6-b′]dithiophene-2, 7-diyl-alt-[4,6-{(1-(3-fluorothieno[3,4-b]thiophen)-2-yl)-2-ethylhexan-1-one}] (P2), were designed and synthesized for use in polymer solar cells (PSCs). We systematically investigated the synthesis, thermal stability, optical and electrochemical properties, field-effect carrier mobilities, and photovoltaic characteristics of these polymers. The field-effect mobilities of P1 and P2 were determined to be 5.8 × 10-4 and 1.2 × 10-3 cm2 V-1 s-1, respectively. Among the naphtho[1,2-b:5,6-b′]dithiophene-based copolymers studied here, P2 showed the best photovoltaic performance, with an open-circuit voltage (Voc) of 0.71 V, a short-circuit current density (Jsc) of 13.52 mA cm -2, a fill factor (FF) of 0.51, and a power conversion efficiency of 4.88% under AM 1.5 irradiation (100 mW cm-2).
UR - https://www.scopus.com/pages/publications/84874091010
U2 - 10.1039/c3py21062f
DO - 10.1039/c3py21062f
M3 - Article
AN - SCOPUS:84874091010
SN - 1759-9954
VL - 4
SP - 2132
EP - 2139
JO - Polymer Chemistry
JF - Polymer Chemistry
IS - 6
ER -
