1.Ministry of Industry and Information Technology Key Lab of Micro-Nano Optoelectronic Information System, Guangdong Provincial Key Laboratory of Semiconductor Optoelectronic Materials and Intelligent Photonic Systems, Harbin Institute of Technology (Shenzhen), Shenzhen, Guangdong 518055, China
2.Institute of Fundamental and Frontier Sciences, University of Electronic Science and Technology of China, Chengdu, Sichuan 611731, China
3.Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan, Shan'xi 030006, China
Yimu Chen (chenyimu@hit.edu.cn)
Qinghai Song (qinghai.song@hit.edu.cn)
Published:30 September 2023,
Published Online:26 July 2023,
Received:29 March 2023,
Revised:11 July 2023,
Accepted:12 July 2023
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Li, Y. H. et al. A platform for integrated spectrometers based on solution-processable semiconductors. Light: Science & Applications, 12, 1739-1748 (2023).
Li, Y. H. et al. A platform for integrated spectrometers based on solution-processable semiconductors. Light: Science & Applications, 12, 1739-1748 (2023). DOI: 10.1038/s41377-023-01231-1.
Acquiring real-time spectral information in point-of-care diagnosis
internet-of-thing
and other lab-on-chip applications require spectrometers with hetero-integration capability and miniaturized feature. Compared to conventional semiconductors integrated by heteroepitaxy
solution-processable semiconductors provide a much-flexible integration platform due to their solution-processability
and
therefore
more suitable for the multi-material integrated system. However
solution-processable semiconductors are usually incompatible with the micro-fabrication processes. This work proposes a facile and universal platform to fabricate integrated spectrometers with semiconductor substitutability by unprecedently involving the conjugated mode of the bound states in the continuum (conjugated-BIC) photonics. Specifically
exploiting the conjugated-BIC photonics
which remains unexplored in conventional lasing studies
renders the broadband photodiodes with ultra-narrowband detection ability
detection wavelength tunability
and on-chip integration ability while ensuring the device performance. Spectrometers based on these ultra-narrowband photodiode arrays exhibit high spectral resolution and wide/tunable spectral bandwidth. The fabrication processes are compatible with solution-processable semiconductors photodiodes like perovskites and quantum dots
which can be potentially extended to conventional semiconductors. Signals from the spectrometers directly constitute the incident spectra without being computation-intensive
latency-sensitive
and error-intolerant. As an example
the integrated spectrometers based on perovskite photodiodes are capable of realizing narrowband/broadband light reconstruction and in-situ hyperspectral imaging.
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