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Indoloindole-based small molecule bulk heterojunction small molecule solar cells
- Issue Date
- Feb-2019
- Publisher
- Elsevier BV
- Keywords
- Indoloindole core; Small molecule-based OPV; Chemical structure design; 3-Ethylrhodanines; Morphology; Charge dynamics and transport
- Citation
- Dyes and Pigments, v.161, pp 419 - 426
- Pages
- 8
- Indexed
- SCI
SCIE
SCOPUS
- Journal Title
- Dyes and Pigments
- Volume
- 161
- Start Page
- 419
- End Page
- 426
- ISSN
- 0143-7208
1873-3743
- Abstract
- An acceptor-donor-acceptor (A-D-A) conjugated small molecule, DHII-EH-TR, was designed, synthesized, and its solar cell performance studied. The DHII-EH-TR molecule with its extended fused aromatic core had a narrow bandgap and displayed red-shifted absorption. To investigate its photovoltaic properties and device application, small molecule-based organic photovoltaics (SMOPVs) were fabricated having the conventional structure of ITO/PEDOT:PSS/DHII-EH-TR:PC70BM/ZnO NPs/Al (PEDOT:PSS, poly (3,4-ethylenedioxythiophene):polystyrene sulfonic acid; ZnO NPs, ZnO nanoparticles). Solar cells made with a blend of 1,8diiodooctane with ZnO NPs generated the highest performance with a power conversion efficiency (PCE) of 3.60%. Charge dynamics and transport, microscopic thin film analysis, and morphology were studied to explain the performance of SMOPVs made with DHII-EH-TR.
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