Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes

Han Eol Lee, Seung Hyun Lee, Minju Jeong, Jung Ho Shin, Yuri Ahn, Daesoo Kim, Sang Ho Oh, Seok Hyun Yun, Keon Jae Lee

Research output: Contribution to journalArticlepeer-review

31 Citations (Scopus)

Abstract

Alopecia is considered an aesthetic, psychological, and social issue among modern people. Although laser-induced skin stimulation is utilized for depilation treatment, such treatment has significant drawbacks of high energy consumption, huge equipment size, and limited usage in daily life. Here, we present a wearable photostimulator for hair-growth applications using high-performance flexible red vertical light-emitting diodes (f-VLEDs). Flexible microscale LEDs were effectively fabricated by a simple monolithic fabrication process, resulting in high light output (∼30 mW mm-2), low forward voltage (∼2.8 V), and excellent flexibility for wearable biostimulation. Finally, trichogenic stimulation of a hairless mouse was achieved using high-performance red f-VLEDs with high thermal stability, device uniformity, and mechanical durability.

Original languageEnglish
Pages (from-to)9587-9595
Number of pages9
JournalACS Nano
Volume12
Issue number9
DOIs
Publication statusPublished - 2018 Sep 25

Bibliographical note

Funding Information:
This work was financially supported by Creative Materials Discovery Program (NRF-2016M3D1A1900035) and Global Frontier R&D Program of the Center for Integrated Smart Sensors (CISS-2016M3A6A6929958) through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT, and Future Planning. This work was supported by National Research Foundation (NRF) of Korea funded by the Ministry of Science, ICT, and Future Planning (Grant No. NRF-2014R1A2A1A12067558 and 2012-0008779).

Publisher Copyright:
© 2018 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)
  • Physics and Astronomy(all)

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