Bulk-Heterojunction with Long-Range Ordering: C60 Single-Crystal with Incorporated Conjugated Polymer Networks

Jie Ren, Mengsi Niu, Xuyun Guo, Yujing Liu, Xiaoyu Yang, Min Chen, Xiaotao Hao, Ye Zhu, Hongzheng Chen, Hanying Li

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)

Abstract

Bulk-heterojunction (BHJ) blends are commonly used as active materials for optoelectronics. Ordering of molecular packing in blends is critical to their electronic properties, spurring investigation on how to obtain BHJ with long-range ordering. However, the difficulty in controlling crystallization during blending limits the crystallinity. Developing a new strategy instead of conventional blending is, thus, needed. Inspired by biomineralization, here, C60 single-crystals are prepared in organogel matrix of poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenvinylene] (MEH-PPV) to form MEH-PPV:C60 composites. Essentially, networks of MEH-PPV are incorporated into growing C60 crystals and penetrate throughout the crystals, resulting in crystal/gel-network interpenetrating composites. Despite the coexistence of MEH-PPV, the C60 crystalline component maintains single-crystallinity and the composite exhibits as BHJ with long-range ordering. Furthermore, compared with blends, the long-range ordered BHJ shows a higher efficiency of charge dissociation and better performance in photodetection, exemplifying the advantage of ordering on organic electronics. Hence, this work provides a new platform to study BHJ with long-range ordering.

Original languageEnglish
Pages (from-to)1630-1635
Number of pages6
JournalJournal of the American Chemical Society
Volume142
Issue number3
DOIs
Publication statusPublished - 22 Jan 2020

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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