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Multi-bandgap colloidal quantum dot mixing for optoelectronic devices

Journal

NEW JOURNAL OF CHEMISTRY
Volume 46, Issue 27, Pages 12892-12900

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/d2nj01987f

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Funding

  1. IIT Roorkee [FIG-100944]

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Colloidal quantum dots have unique properties that make them important elements for various optoelectronics applications. Recent studies have shown that mixing quantum dots with different energy bandgaps can modify their optical and electronic properties, thereby affecting the performance of different optoelectronic devices. Understanding this modification and its effects on device performance parameters is crucial for further research and development.
Colloidal quantum dots have emerged as important elements for various optoelectronics applications due to their unique properties of bandgap tuning through quantum confinement, solution processibility, complementary metal-oxide-semiconductor (CMOS) compatibility, etc. Most of these reported devices are based on monodispersed quantum dots corresponding to a particular energy bandgap. Recently, mixing quantum dots with different bandgaps has been reported with exciting modification of the optical and electronic properties, which can influence the performance of several optoelectronic devices - namely, solar cells, light emitting diodes, photodetectors, etc. In this perspective, the effects of optical and electronic property modification due to multi-bandgap quantum dot mixing and their effects on different optoelectronic device performance parameters are discussed. The recent advances and shortcomings of these devices are summarized in detail. Furthermore, the possible areas of concern and future research directions are included in the discussion.

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