Helical Nanoribbons for Ultra-Narrowband Photodetectors

Yu Zhong, Thomas J. Sisto, Boyuan Zhang, Kiyoshi Miyata, X. Y. Zhu, Michael L. Steigerwald, Fay Ng, Colin Nuckolls

Research output: Contribution to journalArticlepeer-review

92 Citations (Scopus)


This Communication describes a new molecular design that yields ultranarrowband organic photodetectors. The design is based on a series of helically twisted molecular ribbons as the optoelectronic material. We fabricate charge collection narrowing photodetectors based on four different helical ribbons that differ in the wavelength of their response. The photodetectors made from these materials have narrow spectral response with full-width at half maxima of <20 nm. The devices reported here are superior by approximately a factor of 5 to those from traditional organic materials due to the narrowness of their response. Moreover, the active layers for the helical ribbon-based photodetectors are solution-cast but have performance that is comparable to the state-of-the-art narrowband photodetectors made from methylammonium lead trihalide perovskite single crystals. The ultranarrow bandwidth for detection results from the helical ribbons' high absorption coefficient, good electron mobility, and sharp absorption edges that are defined by the twisted molecular conformation.

Original languageEnglish
Pages (from-to)5644-5647
Number of pages4
JournalJournal of the American Chemical Society
Issue number16
Publication statusPublished - Apr 26 2017
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Catalysis
  • General Chemistry
  • Biochemistry
  • Colloid and Surface Chemistry


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