TY - JOUR
T1 - Synthesis and characterization of phenathrothiadiazole-based conjugated polymer for photovoltaic device
AU - Song, Suhee
AU - Park, Seijung
AU - Kwon, Sooncheol
AU - Lee, Byoung Hoon
AU - Kim, Ju Ae
AU - Park, Sung Heum
AU - Jin, Youngeup
AU - Lee, Jongjin
AU - Kim, Il
AU - Lee, Kwanghee
AU - Suh, Hongsuk
PY - 2012/12
Y1 - 2012/12
N2 - A new accepter with phenanthro[9,10-c][1,2,5]thiadiazole unit was synthesized and utilized for the synthesis of the conjugated polymers, PCPDTDTPT and PCDTPT, containing electron donor-acceptor pairs for OPV devices. This novel phenanthro[9,10-c][1,2,5]thiadiazole unit with phenanthene group can supply planarity and possess electron deficient thiadiazole group. The solid films of PCPDTDTPT and PCDTPT show absorption bands with maximum peaks at 492 and 394 nm and the absorption onsets at 620 and 519 nm, corresponding to band gaps of 2.00 and 2.39 eV, respectively. The HOMO and LUMO levels of PCPDTDTPT and PCDTPT were estimated to be (-5.54, -3.63) and (5.81, 3.65) eV, respectively. The PCDTPT with carbazole moiety shows lower HOMO levels as compared to PCPDTDTPT caused by strong electron donating ability of nitrogen atom to provide higher V oc. The devices with PCPDTDTPT: PC 71BM with TiO x layer showed a V OC of 0.77 V, a J SC of 4.71 mA/cm 2, and a FF of 0.36, giving a power conversion efficiency of 1.24%. Crown
AB - A new accepter with phenanthro[9,10-c][1,2,5]thiadiazole unit was synthesized and utilized for the synthesis of the conjugated polymers, PCPDTDTPT and PCDTPT, containing electron donor-acceptor pairs for OPV devices. This novel phenanthro[9,10-c][1,2,5]thiadiazole unit with phenanthene group can supply planarity and possess electron deficient thiadiazole group. The solid films of PCPDTDTPT and PCDTPT show absorption bands with maximum peaks at 492 and 394 nm and the absorption onsets at 620 and 519 nm, corresponding to band gaps of 2.00 and 2.39 eV, respectively. The HOMO and LUMO levels of PCPDTDTPT and PCDTPT were estimated to be (-5.54, -3.63) and (5.81, 3.65) eV, respectively. The PCDTPT with carbazole moiety shows lower HOMO levels as compared to PCPDTDTPT caused by strong electron donating ability of nitrogen atom to provide higher V oc. The devices with PCPDTDTPT: PC 71BM with TiO x layer showed a V OC of 0.77 V, a J SC of 4.71 mA/cm 2, and a FF of 0.36, giving a power conversion efficiency of 1.24%. Crown
KW - Phenanthrothiadiazole
KW - Photovoltaic cells
KW - Polymer
KW - Synthesis
UR - http://www.scopus.com/inward/record.url?scp=84870387827&partnerID=8YFLogxK
U2 - 10.1016/j.synthmet.2012.08.009
DO - 10.1016/j.synthmet.2012.08.009
M3 - Article
AN - SCOPUS:84870387827
SN - 0379-6779
VL - 162
SP - 1936
EP - 1943
JO - Synthetic Metals
JF - Synthetic Metals
IS - 21-22
ER -