What question did this study set out to answer?

The aim is to construct a high-performance self-powered photodetector using a Te/Bi2O2Se heterostructure.

March 28, 2026Nano ResearchOpen Access

In-situ grown 1D Te/2D Bi 2 O 2 Se van der Waals heterostructure for high-performance self-powered polarization-sensitive photodetection

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In-situ construction of a Te/Bi2O2Se heterojunction enhances photodetection performance, indicating potential for advanced imaging applications.

The aim is to construct a high-performance self-powered photodetector using a Te/Bi2O2Se heterostructure.
Constructed 1D Te/2D Bi2O2Se heterojunction using a two-step chemical vapor deposition method.
Engineered heterojunction interface and band structures.
Evaluated performance metrics under 1550 nm light irradiation.
Achieved a responsivity of ~0.89 A·W-1 for the photodetector.
Noted a response time of ~29/41 μs under specified light conditions.
Demonstrated a high polarization ratio of 2.8, enabling polarization optical communication and imaging applications.

Shang et al. (2026) studied this question.

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In-situ construction of a Te/Bi2O2Se heterojunction enhances photodetection performance, indicating potential for advanced imaging applications.