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Related Concept Videos

Photoluminescence: Applications01:14

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Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...
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Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
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Enhanced Emission in Inorganic Halide Perovskite for Room Temperature Continuous-Wave Lasing.

Yu-Ting Lin1, Kai-Chieh Hsu1, Chun-An Chen1,2

  • 1Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.

Small (Weinheim an Der Bergstrasse, Germany)
|June 1, 2025
PubMed
Summary

Researchers achieved stable continuous-wave (CW) lasing at room temperature using all-inorganic halide perovskites (IHP). This breakthrough in IHP lasers paves the way for scalable photonic integrated circuits and advanced coherent light sources.

Keywords:
all‐ambient processinorganic halide perovskitelasingscalablesegregation

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Photonics

Background:

  • Continuous-wave (CW) lasers are essential for scalable photonic integrated circuits.
  • All-inorganic halide perovskites (IHP) possess ideal properties for laser diodes, including high photoluminescence quantum yield, tunable bandgap, stability, and solution processability.
  • Achieving CW lasing in IHPs at room temperature (RT) has remained an experimental challenge.

Purpose of the Study:

  • To demonstrate stable CW lasing at room temperature in all-inorganic halide perovskites (IHP).
  • To develop a scalable synthesis method for uniform IHP films suitable for laser applications.

Main Methods:

  • Scalable synthesis of uniform IHP films via a one-step solution route in ambient air using a customized setup.
  • Characterization of photon-induced phase segregation and its effect on optical properties.
  • Demonstration of CW lasing performance at room temperature.

Main Results:

  • Uniform IHP films were successfully synthesized using a scalable, one-step solution method.
  • Photon-induced phase segregation led to enhanced emission and reduced photoluminescence lifetime in the IHP matrix.
  • Stable CW lasing was achieved at room temperature with a threshold of 6.3 kWcm-2.

Conclusions:

  • The study successfully demonstrated stable room-temperature CW lasing in all-inorganic halide perovskites (IHP).
  • The developed scalable synthesis and observed phase segregation are key to achieving IHP-based laser diodes.
  • These findings position IHP as a promising material for future coherent light sources and on-chip integrated photonics.