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2025 Vol.45, Issue 1 Preview Page

Research Article

All Transparent Heater Based On Metal Oxide

금속 산화물 기반의 완전 투명 히터

Seunghee Cho1
,
Hyeji Kim1
,
Junghyun Lee2
,
Seonghwan Yun1
,
Joondong Kim3*
조 승희1
,
김 혜지1
,
이 정현2
,
윤 성환1
,
김 준동3*
1Undergraduate Student, Department of Electrical Engineering, Incheon National University
2Master Course, Department of Electrical Engineering, Incheon National University
3Professor, Department of Electrical Engineering, Incheon National University
1인천대학교 전기공학과, 학사 과정
2인천대학교 전기공학과, 석사 과정
3인천대학교 전기공학과, 교수
*Corresponding Author
28 February 2025. pp. 39-51
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Abstract

In this study, a transparent heater based on metal oxides was developed. Although conventional heaters have been studied to improve transparency, their electrodes typically employ metallic materials that inherently possess opaque characteristics. To address this limitation, a functional electrode with an oxide/metal/oxide (OMO) structure was introduced for transparent electrodes to realize an all-transparent heater design. This structure maintained the excellent conductivity of silver (Ag) while achieving high transparency through indium-tin-oxide (ITO). The heating layer used ITO, similar to conventional transparent heaters, thereby maintaining an overall transparent structure. The ITO heating layer exhibited an excellent low sheet resistance of approximately 10 Ω/□, and the OMO electrode structure exhibited a low sheet resistance of approximately 2.5 Ω/□. Owing to this superior conductivity, the heater could reach a high heating temperature of approximately 220°C at an applied voltage of 7 V. In contrast to conventional Ag metal electrodes, this OMO electrode design implemented a multilayer structure combining Ag and ITO for the electrodes, satisfying the requirements of both transparency and conductivity. The multilayer structure was designed to maintain high transparency without compromising the performance, enabling the realization of transparent electrodes with excellent properties. The heater demonstrated an electrode transparency of approximately 67% and a heating layer transparency of 87%, significantly enhancing the overall transparency compared with conventional heaters. This transparent heater is expected to be applied in various next-generation transparent electronic devices such as smart windows and transparent displays.

Keywords
Metal oxide
Transparent heater
Oxide/Metal/Oxide
Indium-Tin-Oxide
Ag
Multilayer structure
Transparent electrode
키워드
금속 산화물
투명 히터
OMO
ITO
은
다층 구조
투명 전극
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Information
  • Publisher :Korean Solar Energy Society
  • Publisher(Ko) :한국태양에너지학회
  • Journal Title :Journal of the Korean Solar Energy Society
  • Journal Title(Ko) :한국태양에너지학회 논문집
  • Volume : 45
  • No :1
  • Pages :39-51
  • Received Date : 2025-01-10
  • Revised Date : 2025-01-22
  • Accepted Date : 2025-02-03
  • DOI :https://doi.org/10.7836/kses.2025.45.1.039
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