Liquid Type Nontoxic Photoluminescent Nanomaterials for High Color Quality White-Light-Emitting Diode

Chih Hao Lin, Yung Min Pai, Chun Fu Lee, Akta Verma, Huang Yu Lin, Chang Ching Tu, Xin Yin Chen, Hsi Sheng Teng, Teng-Ming Chen, Cheng-Huan Chen, Chin Wei Sher*, Po-Tsung Lee, Chien-Chung Lin, S. K. Sharma, Hao-Chung Kuo

*Corresponding author for this work

Research output: Contribution to journalArticle

6 Scopus citations

Abstract

High-brightness white-light-emitting diodes (w-LEDs) with excellent color quality is demonstrated by using nontoxic nanomaterials. Previously, we have reported the high color quality w-LEDs with heavy-metal phosphor and quantum dots (QDs), which may cause environmental hazards. In the present work, liquid-type white LEDs composed of nontoxic materials, named as graphene and porous silicon quantum dots are fabricated with a high color rendering index (CRI) value gain up to 95. The liquid-typed device structure possesses minimized surface temperature and 25% higher value of luminous efficiency as compare to dispensing-typed structure. Further, the as-prepared device is environment friendly and attributed to low toxicity. The low toxicity and high R9 (87) component values were conjectured to produce new or improve current methods toward bioimaging application.

Original languageEnglish
Article number411
JournalNanoscale Research Letters
Volume13
DOIs
StatePublished - 1 Jan 2018

Keywords

  • Graphene
  • Light-emitting diode
  • Non-toxicity
  • Quantum dots
  • Silicon

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    Lin, C. H., Pai, Y. M., Lee, C. F., Verma, A., Lin, H. Y., Tu, C. C., Chen, X. Y., Teng, H. S., Chen, T-M., Chen, C-H., Sher, C. W., Lee, P-T., Lin, C-C., Sharma, S. K., & Kuo, H-C. (2018). Liquid Type Nontoxic Photoluminescent Nanomaterials for High Color Quality White-Light-Emitting Diode. Nanoscale Research Letters, 13, [411]. https://doi.org/10.1186/s11671-018-2835-4