Transparent Supercapacitors: From Optical Theories to Optoelectronics Applications

Sang Woo Kim, Sang Young Lee

Research output: Contribution to journalReview articlepeer-review

10 Citations (Scopus)


The ever-increasing demand for smart optoelectronics spurs the relentless pursuit of transparent wireless devices as a game-changing technology that can provide unseen visual information behind the electronics. To enable successful operation of the transparent wireless devices, their power sources should be highly transparent in addition to acquiring reliable electrochemical performance. Among various transparent power sources, supercapacitors (SCs) have been extensively investigated as a promising candidate due to their exceptional cyclability, power capability, material diversity, and scalable/low-cost processability. Herein, we describe current status and challenges of transparent SCs, with a focus on their core materials, performance advancements, and integration with application devices. A special attention is devoted to transparent conductive electrodes (TCEs) which act as a key-enabling component in the transparent SCs. Based on fundamental understanding of optical theories and operating principles of transparent materials, we comprehensively discuss materials chemistry, structural design, and fabrication techniques of TCEs. In addition, noteworthy progresses of transparent SCs are briefly overviewed in terms of their architectural design, opto-electrochemical performance, flexibility, form factors, and integration compatibility with transparent flexible/wearable devices of interest. Finally, development direction and outlook of transparent SCs are explored along with their viable roles in future application fields.

Original languageEnglish
Pages (from-to)265-285
Number of pages21
JournalEnergy and Environmental Materials
Issue number3
Publication statusPublished - 2020 Sept

Bibliographical note

Funding Information:
This work was supported by the Basic Science Research Program (2018R1A2A1A05019733), Wearable Platform Materials Technology Center (2016R1A5A1009926) through the National Research Foundation of Korea (NRF) grant by the Korean Government (MSIT), and Industry Technology Development Program (10080540) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).

Publisher Copyright:
© 2020 Zhengzhou University

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)
  • Water Science and Technology
  • Environmental Science (miscellaneous)
  • Waste Management and Disposal
  • Energy (miscellaneous)


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