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

doi:10.1021/acsnano.8b05568

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^*

^*Corresponding author for this work

Electronic Materials Engineering

Korea Advanced Institute of Science and Technology
Yonsei University
Massachusetts General Hospital

Research output: Contribution to journal › Journal article › peer-review

90 Scopus citations

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 language	English
Pages (from-to)	9587-9595
Number of pages	9
Journal	ACS Nano
Volume	12
Issue number	9
DOIs	https://doi.org/10.1021/acsnano.8b05568
State	Published - 2018.09.25

Keywords

bioelectronics
flexible vertical LED
hair growth
microLED
phototherapy
red LED

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10.1021/acsnano.8b05568

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@article{8d31fd0351094e5db7a98917cdc3193b,

title = "Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes",

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.",

keywords = "bioelectronics, flexible vertical LED, hair growth, microLED, phototherapy, red LED",

author = "Lee, \{Han Eol\} and Lee, \{Seung Hyun\} and Minju Jeong and Shin, \{Jung Ho\} and Yuri Ahn and Daesoo Kim and Oh, \{Sang Ho\} and Yun, \{Seok Hyun\} and Lee, \{Keon Jae\}",

note = "Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

month = sep,

day = "25",

doi = "10.1021/acsnano.8b05568",

language = "English",

volume = "12",

pages = "9587--9595",

journal = "ACS Nano",

issn = "1936-0851",

number = "9",

}

TY - JOUR

T1 - Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes

AU - Lee, Han Eol

AU - Lee, Seung Hyun

AU - Jeong, Minju

AU - Shin, Jung Ho

AU - Ahn, Yuri

AU - Kim, Daesoo

AU - Oh, Sang Ho

AU - Yun, Seok Hyun

AU - Lee, Keon Jae

PY - 2018/9/25

Y1 - 2018/9/25

N2 - 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.

AB - 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.

KW - bioelectronics

KW - flexible vertical LED

KW - hair growth

KW - microLED

KW - phototherapy

KW - red LED

UR - https://www.scopus.com/pages/publications/85052749103

U2 - 10.1021/acsnano.8b05568

DO - 10.1021/acsnano.8b05568

M3 - Journal article

C2 - 30125485

AN - SCOPUS:85052749103

SN - 1936-0851

VL - 12

SP - 9587

EP - 9595

JO - ACS Nano

JF - ACS Nano

IS - 9

ER -

Trichogenic Photostimulation Using Monolithic Flexible Vertical AlGaInP Light-Emitting Diodes

Abstract

Keywords

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