Toward the Realization of A Practical Diketopyrrolopyrrole-Based Small Molecule for Improved Efficiency in Ternary BHJ Solar Cells
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- Toward the Realization of A Practical Diketopyrrolopyrrole-Based Small Molecule for Improved Efficiency in Ternary BHJ Solar Cells
- Lee, Junghoon; Yun, Myoung Hee; Kim, Jonggi; Kim, Jin Young; Yang, Changduk
- Control device; Cost effective; Diketopyrrolopyrroles; dimethylphenylamine; Energy funnels; Overall power conversion efficiency; Small molecules
- Issue Date
- MACROMOLECULAR RAPID COMMUNICATIONS, v.33, no.2, pp.140 - 145
- An easily accessible DPP-based small molecule (DMPA-DTDPP) has been synthesized by a simple and efficient route. The resulting molecule, when incorporated into a P3HT:PCBM-based BHJ solar cell, is found to significantly improve the efficiency. The utility of DMPA-DTDPP as an additive yields an increase in the short circuit current density (Jsc) because DMPA-DTDPP serves as an energy funnel for P3HT excitons at the P3HT:PCBM interfaces, resulting in an improved overall power conversion efficiency, compared to the P3HT:PCBM control device. Considering the trouble-free and cost effective synthesis of DMPA-DTDPP, it may prove very useful in high-performance solar cells.
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