Thermally Managed, Injectable Optoelectronic Probe with Heat Dissipation Guide for Photodynamic Therapy

Ju Seung Lee, Jiwoong Choi, Gha Yeon Park, Seung Ji Kang, Jae hun Yang, Youngkyu Lee, Myunghwan Choi, Kwangmeyung Kim, Tae il Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The development of fabrication technologies and appearance of new materials has resulted in dramatic increase in the performance of electronic devices, while the overall size has decreased. Recent electronic devices made of micro/nano-size components show high efficiency and outstanding performance with compact size, but these devices have revealed several fatal problems. In particular, the isolated heat that is generated by numerous components concentrated in a limited small area at high density, such as bio-integrated devices, is an issue that needs to be urgently addressed, because it is closely related to the performance and lifetime of electronic devices. To solve these problems, the microscale light emitting diode (µLED)-based neural probe is introduced on an injectable heat dissipation guide. The heat dissipation guide is made of boron nitride (BN) nanomaterials with high thermal conductivity. The heat management noticeably improves the optical output performance of the µLEDs, in which BN effectively dissipates heat, and allows enhanced lighting from the LEDs to be transmitted through brain tissue without thermal damage. Moreover, it shows remarkable improvement in the therapeutic effect of photodynamic therapy of mouse cancer cells.

Original languageEnglish
Article number2300753
Issue number35
StatePublished - 29 Aug 2023

Bibliographical note

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© 2023 Wiley-VCH GmbH.


  • boron nitride (BN)
  • heat dissipation
  • injectable bioelectronics
  • microscale light emitting diodes (µLEDs)
  • photodynamic therapy (PDT)


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