The Synthesis and Characterization of Benzobisoxazole-based Conjugated Polymers for Organic Photodetectors


  • Myeong In Kim

    Department of Organic and Nano Engineering, and Human-Tech Convergence Program, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea

  • WonJo Jeong

    Department of Organic and Nano Engineering, and Human-Tech Convergence Program, Hanyang University, 222 Wangsimni-ro, Seongdong-gu, Seoul, 04763, Republic of Korea

Received: 31 December 2023 | Revised: 24 January 2024 | Accepted: 20 February 2024 | Published Online: 27 February 2024


Benzo[1,2-d:4,5-d’]bis(oxazole) (BBO) is a conjugated building block that can be easily synthesized for the development of organic optoelectronic polymers. Here, the authors synthesized BBO-based polymers, P1 and P2, by coupling BBO with thiophenes for use in organic photodetectors (OPDs). The optical characteristics of P1 and P2 make them suitable for OPDs, as they selectively absorb the green light with a narrow bandwidth in the range of 500–600 nm. The OPD devices were fabricated by making a bulk heterojunction active layer between the synthesized polymers and a nonfullerene acceptor, IDIC. P1-based devices showed slightly higher responsivity (R) of 0.169 A/W than 0.112 A/W of P2-based devices. However, the P2-based device was higher than D* value of the P1-based under 100 μW/cm2, which was due to the influence of excessive thiophene units that had low dark current density.


Organic photodetector, p-type polymer, Conjugated polymer, Alkylthiophene π-spacer, Benzobisoxazole


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How to Cite

Kim, M. I., & Jeong, W. (2024). The Synthesis and Characterization of Benzobisoxazole-based Conjugated Polymers for Organic Photodetectors. Organic Polymer Material Research, 5(2), 11–25.


Article Type

Article (This article belongs to the Special Issue "Semiconducting Polymers for Electronic Applications")