How do quantum dot solar cells work?

Quantum dots are tiny semiconductor particles, typically only a few nanometers in size, that exhibit unique optical and electronic properties due to quantum mechanical effects. Here’s a brief overview of how they work:

Quantum Confinement: Quantum dots are tiny semiconductor particles, typically only a few nanometers in size. Because of their small size, they confine electrons in all three spatial dimensions. This confinement leads to discrete energy levels, similar to those in atoms.

Excitation and Emission: When quantum dots are exposed to an external energy source, such as light or electricity, electrons within the quantum dots can be excited to higher energy levels. When these electrons return to their original energy levels, they release energy in the form of light. The color of this emitted light depends on the size of the quantum dot: smaller dots emit shorter wavelengths (blue light), while larger dots emit longer wavelengths (red ligh)2.

Size-Dependent Properties: The optical and electronic properties of quantum dots are highly dependent on their size. This size dependency allows for precise control over the color of light they emit, making them useful in various applications such as display technologies, medical imaging, and solar cells

Ibrahim M. Hamammu

These Articles may help

Quantum Dot Solar Cells. The Next Big Thing in Photovoltaics

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https://doi.org/10.1021/jz400052e

Recent advances in the development of high efficiency quantum dot sensitized solar cells (QDSSCs): A review

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Revolutionary Breakthrough in Solar Energy: World’s Most Efficient QD Solar Cells Developed

January 27, 2024.

https://news.unist.ac.kr/revolutionary-breakthrough-in-solar-energy-worlds-most-efficient-qd-solar-cells-developed/

QUANTUM DOTS ON SOLAR CELL

Int J of Adv Res in Computer and Communication Engineering. Vol. 12, Issue 5, May 2023

IJCCE12-23- Quantum Dots on Solar Cell

DOI: 10.17148/IJARCCE.2023.12552

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