Self-Powering Sensory Device with Multi-Spectrum Image Realization for Smart Indoor Environments

Tae Hyuk Kim, Byoung Soo Yu, Hyun Woo Ko, Na Won Park, Muhammad Ahsan Saeed, Jongtae Ahn, Suyeon Jo, Dae Yeon Kim, Seon Kyu Yoon, Kwang Hoon Lee, Sang Young Jeong, Han Young Woo, Hyunwoo J. Kim, Tae Geun Kim, Jae Hong Park, Min Chul Park, Do Kyung Hwang, Jae Won Shim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


The development of organic-based optoelectronic technologies for the indoor Internet of Things market, which relies on ambient energy sources, has increased, with organic photovoltaics (OPVs) and photodetectors (OPDs) considered promising candidates for sustainable indoor electronic devices. However, the manufacturing processes of standalone OPVs and OPDs can be complex and costly, resulting in high production costs and limited scalability, thus limiting their use in a wide range of indoor applications. This study uses a multi-component photoactive structure to develop a self-powering dual-functional sensory device with effective energy harvesting and sensing capabilities. The optimized device demonstrates improved free-charge generation yield by quantifying charge carrier dynamics, with a high output power density of over 81 and 76 µW cm−2 for rigid and flexible OPVs under indoor conditions (LED 1000 lx (5200 K)). Furthermore, a single-pixel image sensor is demonstrated as a feasible prototype for practical indoor operating in commercial settings by leveraging the excellent OPD performance with a linear dynamic range of over 130 dB in photovoltaic mode (no external bias). This apparatus with high-performance OPV-OPD characteristics provides a roadmap for further exploration of the potential, which can lead to synergistic effects for practical multifunctional applications in the real world by their mutual relevance.

Original languageEnglish
Article number2307523
JournalAdvanced Materials
Issue number2
StatePublished - 11 Jan 2024

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© 2023 Wiley-VCH GmbH.


  • charge carrier dynamics
  • indoor photovoltaics
  • multi-component photoactive layer
  • multi-spectrum image sensor
  • organic photodiode


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