Journal
CHEMISTRY OF MATERIALS
Volume 29, Issue 10, Pages 4301-4310Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.7b00595
Keywords
-
Funding
- Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) - Ministry of Science, ICT & Future Planning [2015M1A2A2056216]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science, and Technology [NRF-2015R1A2A2A01003622]
- Ministry of Education (MOE)
- National Research Foundation of Korea (NRF) through the Human Resource Training Project for Regional Innovation [2015035858]
- National Research Foundation of Korea [2015R1A2A2A01003622] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
We synthesized and characterized two kinds of regioregular polymers that were based on thieno[3,4-b]thiophene as an electron-accepting unit and benzo[1,2-b:4,5-b']dithiophene as the electron-donating unit with different side chain, alkylthio and alkyl thiophenes, named rr-PTBS and rrPTB7-Th, respectively. Because of the partial introduction of the alkylthio thiophene side chain, rr-PTBS showed red-shifted absorption and a deeper HOMO level compared to those of rrPTB7-Th. In addition, both rr-PTBS:PC71BM and rr-PTB7Th:PC71BM blended films showed face-on orientations stronger than those of regiorandom PTB7-Th. However, the rr-PTB7-Th:PC7IBM blended film showed a peak in the out of -plane direction much weaker than those of rrPTBS:PC71BM and PTB7-Th:PC71BM blended films. Moreover, the rr-PTBS:PC71BM blended film exhibited charge carrier mobility (mu(e)/mu(h) similar to 1.01) much more balanced than that of the rr-PTB7-Th:PC71BM blended film (mu(e)/mu(h) similar to 1.23). The bulkheterojunction organic photovoltaic (OPV) device based on rr-PTBS and the 1,8-diiodooctane additive showed a high power conversion efficiency (PCE) of 8.68%, while the OPV device based on rr-PTB7-Th and the 1,8-diiodooctane additive showed a PCE of 7.04%. Finally, an OPV device using rr-PTBS, the diphenyl ether additive, and Micro Lens Film exhibited a short-circuit current (J(sc)) of 19.72 mA/cm(2), an open-circuit voltage (V-oc) of 0.82 V, and a fill factor (FF) of 63.82%, thus resulting in a PCE of 10.31%.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available