TY - JOUR
T1 - Effects of Side-Chain Engineering with the S Atom in Thieno[3,2-b]thiophene-porphyrin to Obtain Small-Molecule Donor Materials for Organic Solar Cells
AU - Xie, Liuping
AU - Tang, Wei
AU - Liu, Zhixin
AU - Tang, Wencheng
AU - Yuan, Zihao
AU - Qin, Yinbin
AU - Yan, Lei
AU - Zhu, Xunjin
AU - Zhu, Weiguo
AU - Wang, Xingzhu
N1 - Funding Information:
This research was funded by the national key R&D program for international collaboration (grant number: No. 2021YFE0191500), the National Natural Science Foundation of China (grant number: No. 51473053), the Natural Science Foundation of Hunan Province (grant number: No. 2019JJ50603), Peacock Team Project funding from the Shenzhen Science and Technology Innovation Committee (grant number: No. KQTD2015033110182370), and Fundamental Research Project funding from Shenzhen Science and Technology Innovation Committee (grant number: No. JCYJ 20190809150213448).
Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.
PY - 2021/10/2
Y1 - 2021/10/2
N2 - To explore the effect of the introduction of heteroatoms on the properties of porphyrin materials, a new porphyrin-based derivative small-molecule donor named as PorTT-T was designed and synthesized based on alkyl-thieno[3,2-b]thiophene(TT)-substituted porphyrins. The linker bridge and end groups of PorTT-T were the same as those of XLP-II small-molecule donor materials, while the side-chain attached to the core of thieno[3,2-b]thiophene(TT)-substituted porphyrin was different. Measurements of intrinsic properties showed that PorTT-T has wide absorption and appropriate energy levels in the UV-visible range. A comparison of the morphologies of the two materials using atomic force microscopy showed that PorTT-T has a better surface morphology with a smaller root-mean-square roughness, and can present closer intermolecular stacking as compared to XLP-II. The device characterization results showed that PorTT-T with the introduced S atom has a higher open circuit voltage of 0.886 eV, a higher short circuit current of 12.03 mAcm−2, a fill factor of 0.499, a high photovoltaic conversion efficiency of 5.32%, better external quantum efficiency in the UV-visible range, and higher hole mobility.
AB - To explore the effect of the introduction of heteroatoms on the properties of porphyrin materials, a new porphyrin-based derivative small-molecule donor named as PorTT-T was designed and synthesized based on alkyl-thieno[3,2-b]thiophene(TT)-substituted porphyrins. The linker bridge and end groups of PorTT-T were the same as those of XLP-II small-molecule donor materials, while the side-chain attached to the core of thieno[3,2-b]thiophene(TT)-substituted porphyrin was different. Measurements of intrinsic properties showed that PorTT-T has wide absorption and appropriate energy levels in the UV-visible range. A comparison of the morphologies of the two materials using atomic force microscopy showed that PorTT-T has a better surface morphology with a smaller root-mean-square roughness, and can present closer intermolecular stacking as compared to XLP-II. The device characterization results showed that PorTT-T with the introduced S atom has a higher open circuit voltage of 0.886 eV, a higher short circuit current of 12.03 mAcm−2, a fill factor of 0.499, a high photovoltaic conversion efficiency of 5.32%, better external quantum efficiency in the UV-visible range, and higher hole mobility.
KW - Devices
KW - Donor
KW - Organic solar cells (OSCs)
KW - Thieno[3,2-b]thiophene(TT)-substituted porphyrins
KW - Thiolalkyl chain
UR - http://www.scopus.com/inward/record.url?scp=85117193163&partnerID=8YFLogxK
U2 - 10.3390/molecules26206134
DO - 10.3390/molecules26206134
M3 - Journal article
C2 - 34684713
AN - SCOPUS:85117193163
SN - 1420-3049
VL - 26
JO - Molecules
JF - Molecules
IS - 20
M1 - 6134
ER -