Maqola

Flexible, highly efficient all-polymer solar cells

Taesu KimDepartment of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of KoreaJae-Han KimDepartment of Mechanical Engineering, KAIST, Daejeon 305-701, Republic of KoreaTae Eui KangDepartment of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of KoreaChangyeon LeeDepartment of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of KoreaHyunbum KangDepartment of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of KoreaMinkwan ShinDepartment of Materials Science and Engineering, POSTECH, Pohang 790-784, Republic of KoreaCheng WangAdvanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USABiwu MaDepartment of Chemical and Biomedical Engineering, Florida State University, Tallahassee, Florida 32310, USAUnyong JeongDepartment of Materials Science and Engineering, POSTECH, Pohang 790-784, Republic of KoreaTaek‐Soo KimDepartment of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of KoreaBumjoon J. KimDepartment of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 305-701, Republic of Korea

2015en

ABI

Annotatsiya

All-polymer solar cells have shown great potential as flexible and portable power generators. These devices should offer good mechanical endurance with high power-conversion efficiency for viability in commercial applications. In this work, we develop highly efficient and mechanically robust all-polymer solar cells that are based on the PBDTTTPD polymer donor and the P(NDI2HD-T) polymer acceptor. These systems exhibit high power-conversion efficiency of 6.64%. Also, the proposed all-polymer solar cells have even better performance than the control polymer-fullerene devices with phenyl-C61-butyric acid methyl ester (PCBM) as the electron acceptor (6.12%). More importantly, our all-polymer solar cells exhibit dramatically enhanced strength and flexibility compared with polymer/PCBM devices, with 60- and 470-fold improvements in elongation at break and toughness, respectively. The superior mechanical properties of all-polymer solar cells afford greater tolerance to severe deformations than conventional polymer-fullerene solar cells, making them much better candidates for applications in flexible and portable devices.

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Identifikatorlar

DOI: 10.1038/ncomms9547

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