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Related Concept Videos

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films08:12

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Related Experiment Video

Updated: Jan 20, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
08:12

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films

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High-Energy Photon Spectroscopy Using All Solution-Processed Heterojunctioned Surface-Modified Perovskite Single

Suneel G Joglekar1, Mark D Hammig2, L Jay Guo1

  • 1Department of Electrical and Computer Engineering , University of Michigan , 1301 Beal Avenue , Ann Arbor , Michigan 48109 , United States.

ACS Applied Materials & Interfaces
|August 30, 2019
PubMed
Summary

Researchers developed a new method to stabilize perovskite materials for better high-energy photon detectors. This technique improves device consistency and could lead to affordable, scalable manufacturing of perovskite-based optoelectronic devices.

Keywords:
2DRuddlesden−Popperperovskiteradiation detectionsolution-processedsurface engineering

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Related Experiment Videos

Last Updated: Jan 20, 2026

Low Pressure Vapor-assisted Solution Process for Tunable Band Gap Pinhole-free Methylammonium Lead Halide Perovskite Films
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Area of Science:

  • Materials Science
  • Solid-State Physics
  • Optoelectronics

Background:

  • Organic-inorganic hybrid perovskites offer low-cost, solution-processable materials for optoelectronic devices.
  • Challenges in interdevice variability and long-term stability hinder commercial adoption, particularly for high-energy photon detectors.
  • Existing perovskite devices often suffer from inconsistent performance and limited lifespan.

Purpose of the Study:

  • To address interdevice variability and improve the performance of perovskite-based high-energy photon detectors.
  • To develop a facile, scalable technique for enhancing perovskite device stability and repeatability.
  • To explore the potential of two-dimensional Ruddlesden-Popper (RP) hybrid perovskites for detector applications.

Main Methods:

  • Grown methylammonium lead iodide perovskite single crystals using inverse-temperature crystallization.
  • Applied a solution-based coating technique to deposit a micrometer-thick surface layer of wider band gap two-dimensional Ruddlesden-Popper (RP) hybrid perovskite onto the single crystals.
  • Fabricated room-temperature γ-ray detector devices using the coated single crystals.

Main Results:

  • Achieved significantly improved device yield and run-to-run/device-to-device repeatability.
  • Demonstrated an energy resolution of under 15% (12.0 keV) for incident 81 keV photons.
  • The surface coating effectively mitigated interdevice variability issues.

Conclusions:

  • The facile solution-based coating technique successfully enhances the performance and consistency of perovskite γ-ray detectors.
  • This method offers a promising pathway for overcoming variability challenges in perovskite optoelectronics.
  • The findings could enable low-cost, scalable manufacturing of advanced perovskite-based devices for photon detection.