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The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
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A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...

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Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch

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Published on: February 7, 2022

Photoswitching Molecular Junctions: Platforms and Electrical Properties.

Youngsang Kim^1,2

¹Lawrence Berkeley National Laboratory, Berkeley, California, 94720, USA.

Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry

|August 11, 2020

Summary

This review explores photoswitching molecular junctions, which alter electronic properties with light. It covers platforms, molecules like diarylethene, and future directions for molecular electronics.

Keywords:

ensemble molecule junctions molecular junctions photochromism photoswitching single molecule junctions

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Area of Science:

Molecular electronics and nanotechnology.
Advanced materials science.

Background:

Technological progress allows molecular manipulation and device creation.
Photoswitching molecular junctions change electronic properties upon light exposure.

Purpose of the Study:

To review platforms for studying charge transport in photoswitching molecular junctions.
To summarize electronic properties of various photoswitching molecules.

Main Methods:

Investigating charge transport in single and ensemble molecular junctions.
Analyzing diverse photoswitching molecules including diarylethene, azobenzene, dihydropyrene, and spiropyran.

Main Results:

Detailed examination of platforms for molecular junction research.
Comprehensive overview of photoswitching molecule properties and behaviors.

Conclusions:

Discussion of current challenges in photoswitching molecular electronics.
Outlook on future advancements and research directions for molecular devices.