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An Intelligence Programmable Intrathecal Injection System Based on Tween 80-Confined Halide Perovskite Optoelectronic

Kaikai Gao1,2,3, Zelin Cao1,3, Bai Sun1,2,3

  • 1Frontier Institute of Science and Technology, and Interdisciplinary Research Center of Frontier Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.

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|November 11, 2025
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Summary
This summary is machine-generated.

Lead-free perovskite optoelectronic memristors show promise for smart medicine. A Tween 80 strategy improves film quality, enabling efficient pattern recognition and fast, durable photoresponse for drug delivery systems.

Keywords:
artificial synapsesneuromorphic computingoptoelectronic memristorprogrammable intrathecal injectionsmart medicine

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Nanotechnology

Background:

  • Lead-free inorganic perovskites offer an alternative to lead-based materials for optoelectronic devices.
  • Challenges in controlling perovskite nucleation and crystal growth hinder device performance.
  • Cesium silver bismuth bromide (Cs2AgBiBr6) is a promising lead-free perovskite material.

Purpose of the Study:

  • To develop a lead-free inorganic perovskite-based optoelectronic memristor with enhanced performance.
  • To investigate the effect of Tween 80 confinement on Cs2AgBiBr6 film quality and device characteristics.
  • To explore the application of the developed device in pattern recognition, transient photoresponse, and smart medicine.

Main Methods:

  • Utilized a Tween 80 confinement strategy during the synthesis of Cs2AgBiBr6 perovskite films.
  • Fabricated an optoelectronic memristor device based on the confined Cs2AgBiBr6 film.
  • Evaluated the device's electronic synaptic functionality (ESF) and transient photoresponse (TPR) under electrical and optical stimulation.
  • Designed an all-optically controlled intrathecal injection system utilizing the device's capabilities.

Main Results:

  • The Tween 80 confinement effectively suppressed bromine vacancies and produced high-quality, pinhole-free Cs2AgBiBr6 films.
  • The device exhibited excellent optoelectronic performance, including efficient pattern recognition via ESF.
  • Demonstrated a transient photoresponse with a 20 ms response time, 931.7 s durability, and over 1000 cycles repeatability.
  • Achieved all-optical writing and erasing for complex image encryption and developed a functional intrathecal injection system.

Conclusions:

  • Tween 80 confinement is a viable strategy for improving lead-free perovskite optoelectronic devices.
  • The developed optoelectronic memristor shows significant potential for advanced applications in neuromorphic computing and smart medicine.
  • This research opens new avenues for integrating optoelectronic memristors into biomedical and life science applications.