PMMA Thin Film with Embedded Carbon Quantum Dots for Post-Fabrication Improvement of Light Harvesting in Perovskite Solar Cells

Askar A Maxim, Shynggys N Sadyk, Damir Aidarkhanov, Charles Surya, Annie Ng, Yoon-Hwae Hwang, Timur Sh Atabaev, Askhat N Jumabekov

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Perovskite solar cells (PSCs) with a standard sandwich structure suffer from optical transmission losses due to the substrate and its active layers. Developing strategies for compensating for the losses in light harvesting is of significant importance to achieving a further enhancement in device efficiencies. In this work, the down-conversion effect of carbon quantum dots (CQDs) was employed to convert the UV fraction of the incident light into visible light. For this, thin films of poly(methyl methacrylate) with embedded carbon quantum dots (CQD@PMMA) were deposited on the illumination side of PSCs. Analysis of the device performances before and after application of CQD@PMMA photoactive functional film on PSCs revealed that the devices with the coating showed an improved photocurrent and fill factor, resulting in higher device efficiency.

Original languageEnglish
Article number291
JournalNanomaterials
Volume10
DOIs
Publication statusPublished - Feb 9 2020
Externally publishedYes

Keywords

  • perovskite solar cell
  • PMMA
  • Carbon quantum dots
  • Down-conversion
  • light harvesting

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