TY - JOUR
T1 - Furan-substituted benzodithiophene-based polymer semiconductors as charge transport materials for organic transistors and nanocrystal photovoltaics
AU - Nketia-Yawson, Vivian
AU - Kim, Hae Jeong
AU - Ahn, Hyungju
AU - Nketia-Yawson, Benjamin
AU - Choi, Jongmin
AU - Jo, Jea Woong
N1 - Publisher Copyright:
© 2024 Elsevier Ltd
PY - 2025/2
Y1 - 2025/2
N2 - With the tunability of their electronic properties, π-conjugated polymeric semiconductors have been extensively researched for electronic devices. Here, benzo [1,2-b:4,5-b′]dithiophene-based conjugated polymers are synthesized by controlling the contents of thiophene and furan units and their electrical characteristics are reported. The synthesized furan-containing polymers exhibited smoother surface morphology, desirable solubility, deeper highest occupied molecular orbital levels, increased band gap, and improved film crystallinity. The electrolyte-gated organic field-effect transistors using 25 % furan substituted polymer, P2, exhibited a high mobility of over 8 cm2 V−1 s−1. Furthermore, AgBiS2 nanocrystal photovoltaics using P2 as a hole transport material provided a higher efficiency of 5.59 % compared to devices using control polymer without furan substitution (4.30 %). Our work demonstrates significant structure-property relationships for modifying the electrical properties of polymer semiconductors using molecular engineering to achieve high-performing organic electronic devices.
AB - With the tunability of their electronic properties, π-conjugated polymeric semiconductors have been extensively researched for electronic devices. Here, benzo [1,2-b:4,5-b′]dithiophene-based conjugated polymers are synthesized by controlling the contents of thiophene and furan units and their electrical characteristics are reported. The synthesized furan-containing polymers exhibited smoother surface morphology, desirable solubility, deeper highest occupied molecular orbital levels, increased band gap, and improved film crystallinity. The electrolyte-gated organic field-effect transistors using 25 % furan substituted polymer, P2, exhibited a high mobility of over 8 cm2 V−1 s−1. Furthermore, AgBiS2 nanocrystal photovoltaics using P2 as a hole transport material provided a higher efficiency of 5.59 % compared to devices using control polymer without furan substitution (4.30 %). Our work demonstrates significant structure-property relationships for modifying the electrical properties of polymer semiconductors using molecular engineering to achieve high-performing organic electronic devices.
KW - Charge carrier mobility
KW - Conjugated polymers
KW - Furan substitution
KW - Nanocrystal photovoltaics
KW - Organic field-effect transistors
UR - http://www.scopus.com/inward/record.url?scp=85208382127&partnerID=8YFLogxK
U2 - 10.1016/j.dyepig.2024.112533
DO - 10.1016/j.dyepig.2024.112533
M3 - Article
AN - SCOPUS:85208382127
SN - 0143-7208
VL - 233
JO - Dyes and Pigments
JF - Dyes and Pigments
M1 - 112533
ER -