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Related Concept Videos

Thermal and Photochemical Electrocyclic Reactions: Overview01:26

Thermal and Photochemical Electrocyclic Reactions: Overview

Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.

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Related Experiment Video

Updated: Jun 16, 2026

Flash Infrared Annealing for Perovskite Solar Cell Processing
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Flash Infrared Annealing for Perovskite Solar Cell Processing

Published on: February 3, 2021

Beyond Conventional Pyroelectrics: 2D-Layered Perovskites for Next Generation Pyro-Phototronic Devices.

Zinnia Mallick1,2, Dipankar Mandal1

  • 1Quantum Materials and Devices Unit, Institute of Nano Science and Technology, Mohali, Punjab, India.

Small (Weinheim an Der Bergstrasse, Germany)
|June 15, 2026
PubMed
Summary
This summary is machine-generated.

Two-dimensional layered halide perovskites offer unique quantum well structures and multifunctional properties like pyroelectricity. These materials are ideal for developing next-generation self-powered optoelectronic devices through pyro-phototronic effects.

Keywords:
2D layered halide perovskitesferroelectricityferro‐pyro‐phototronicorganic‐Inorganic hybrid perovskites (OIHPs)pyroelectricitypyro‐phototronic

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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
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Last Updated: Jun 16, 2026

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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation

Published on: October 1, 2019

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Two-dimensional (2D) layered halide perovskites possess unique quantum well structures.
  • They exhibit excellent optical and semiconducting properties.
  • Structural flexibility enables engineering of multifunctional properties like piezoelectricity, pyroelectricity, and ferroelectricity.

Purpose of the Study:

  • To review design strategies for 2D layered halide perovskites yielding non-centrosymmetric crystal structures.
  • To discuss synthesis strategies and applications in photodetection and optical communication.
  • To summarize the design and applications of 2D halide perovskites in the pyro-phototronic effect.

Main Methods:

  • Review of existing literature on 2D layered halide perovskites.
  • Analysis of design strategies for achieving non-centrosymmetric structures.
  • Discussion of synthesis methods and multi-modal applications.

Main Results:

  • 2D halide perovskites can be engineered for pyro-, ferro-, and piezoelectric properties.
  • The convergence of pyroelectric and semiconducting properties is key for pyro-phototronic effects.
  • Applications in photodetection and optical communication are demonstrated.

Conclusions:

  • 2D layered halide perovskites are promising for next-generation self-powered optoelectronic devices.
  • Pyro-phototronic and ferro-pyro-phototronic effects are emergent phenomena in these materials.
  • Further research is needed to address current challenges and explore future outlooks.