Flexible, High Temperature, Planar Lighting with Large Scale Printable Nanocarbon Paper

Wenzhong Bao, Andrea D. Pickel, Qing Zhang, Yanan Chen, Yonggang Yao, Jiayu Wan, Kun (Kelvin) Fu, Yibo Wang, Jiaqi Dai, Hongli Zhu, Dennis Drew, Michael Fuhrer, Chris Dames, Liangbing Hu

Research output: Contribution to journalArticleResearchpeer-review

38 Citations (Scopus)

Abstract

A nanocarbon paper was demonstrated composed of monolayer graphene-oxide (GO) nanosheets interpenetrated with 10 wt% single walled carbon nanotubes (CNTs). A unique two-step reduction process is used to convert the paper to a highly graphitic, highly conducting form, which leads to compelling lighting performance. The first thermal reduction step leads to moderately reduced-grapheneoxide (RGO) paper mixed with CNTs, while the second, higher temperature step further purifies the RGO-CNT paper and leads to improved crystallinity of the graphene planes. After the two-step reduction, the RGO-CNT paper shows excellent graphene-like Raman spectra with a dense structure and a record high electrical conductivity at room temperature. This high purity RGO-CNT paper can routinely sustain T = 3000 K, with one sample reaching 3320 ± 50 K, significantly higher than observed for papers made from CNTs or graphene sheets only. This ultrathin, freestanding RGO-CNT paper leads to lighting efficiency in vacuum comparable to or potentially higher than that of tungsten wires in argon gas.

Original languageEnglish
Pages (from-to)4684-4691
Number of pages8
JournalAdvanced Materials
Volume28
Issue number23
DOIs
Publication statusPublished - 2016

Keywords

  • broadband radiation
  • flexible lighting
  • high temperature
  • nanocarbon paper
  • record high conductivity

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