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Flexible, highly efficient all-polymer solar cells

Journal Article · · Nature Communications
DOI:https://doi.org/10.1038/ncomms9547· OSTI ID:1624007
 [1];  [2];  [3];  [3];  [3];  [4];  [5];  [6];  [4];  [2];  [3]
  1. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Chemical and Biomolecular Engineering; Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). KI for the NanoCentury; DOE/OSTI
  2. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). KI for the NanoCentury; Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Mechanical Engineering
  3. Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). Dept. of Chemical and Biomolecular Engineering; Korea Advanced Inst. Science and Technology (KAIST), Daejeon (Korea, Republic of). KI for the NanoCentury
  4. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of). Dept. of Materials Science and Engineering
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  6. Florida State Univ., Tallahassee, FL (United States). Dept. of Chemical and biomedical Engineering
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.
Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences & Biosciences Division
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1624007
Journal Information:
Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 6; ISSN 2041-1723
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English

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