TY - JOUR
T1 - Synthesis of multi-armed small molecules with planar terminals and their application in organic solar cells
AU - Dang, Dongfeng
AU - Zhou, Pei
AU - Xiao, Manjun
AU - Yang, Renqiang
AU - Zhu, Weiguo
N1 - Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.
PY - 2016/10/1
Y1 - 2016/10/1
N2 - Bi-armed Cz(BT-T-3Cz)2, tri-armed TPA(BT-T-3Cz)3 and tetra-armed SF(BT-T-3Cz)4 with planar terminals were designed, in which carbazole, triphenylamine and spiro-fluorene units were employed as the electron-rich core, respectively, and benzothiadiazole units were introduced as the electron-deficient arms. As displayed, when the electron-deficient arms in molecules increase, improved thermal properties and increased extinction coefficient were obtained. Also as anticipated, the spatial configurations of SMs could affect their photovoltaic performance significantly. The linear Cz(BT-T-3Cz)2-based solar cells exhibited a PCE value of 3.0%, however, tri-armed TPA(BT-T-3Cz)3 and tetra-armed SF(BT-T-3Cz)4 displayed better photovoltaic properties with the PCE values up to 5.25% and 4.37% in their corresponding devices, respectively, indicating that altering the spatial configurations in molecules is an efficient method to enhance their photovoltaic performance in OSCs.
AB - Bi-armed Cz(BT-T-3Cz)2, tri-armed TPA(BT-T-3Cz)3 and tetra-armed SF(BT-T-3Cz)4 with planar terminals were designed, in which carbazole, triphenylamine and spiro-fluorene units were employed as the electron-rich core, respectively, and benzothiadiazole units were introduced as the electron-deficient arms. As displayed, when the electron-deficient arms in molecules increase, improved thermal properties and increased extinction coefficient were obtained. Also as anticipated, the spatial configurations of SMs could affect their photovoltaic performance significantly. The linear Cz(BT-T-3Cz)2-based solar cells exhibited a PCE value of 3.0%, however, tri-armed TPA(BT-T-3Cz)3 and tetra-armed SF(BT-T-3Cz)4 displayed better photovoltaic properties with the PCE values up to 5.25% and 4.37% in their corresponding devices, respectively, indicating that altering the spatial configurations in molecules is an efficient method to enhance their photovoltaic performance in OSCs.
KW - 3D molecules
KW - D-A type small molecules
KW - Multi-armed small molecules
KW - Organic solar cells
KW - Planar terminals
UR - https://www.scopus.com/pages/publications/84969981528
U2 - 10.1016/j.dyepig.2016.05.032
DO - 10.1016/j.dyepig.2016.05.032
M3 - 文章
AN - SCOPUS:84969981528
SN - 0143-7208
VL - 133
SP - 1
EP - 8
JO - Dyes and Pigments
JF - Dyes and Pigments
ER -
