Journal
ACS APPLIED ELECTRONIC MATERIALS
Volume 4, Issue 1, Pages 27-58Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsaelm.1c00783
Keywords
carbon quantum dots; solar concentrator; photoanode; counter electrode; hole transport layer; and electron transport layer
Funding
- Fonds de recherche du Quebec-Nature et technologies (FRQNT), Canada
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Carbon quantum dots have excellent optical properties that can enhance the performance of solar technologies, such as luminescent solar concentrators and photovoltaic cells. They are transparent, easy to control in terms of absorption/re-emission spectra, and can reduce costs while improving performance.
Interest in carbon quantum dots (CQDs) has recently boomed due to their potential to enhance the performance of various solar technologies as nontoxic, naturally abundant, and cleanly produced nanomaterials. CQDs and their other variations, such as nitrogen-doped carbon quantum dots (NCQDs) and graphene quantum dots (GQDs), have improved the performance of luminescent solar concentrators (LSCs) and photovoltaic (PV) cells due to their excellent optical properties. As fluorophores in LSCs, CQDs are mostly transparent to visible light and have absorption/re-emission spectra that can be easily controlled. The outstanding optical properties of CQDs make them promising materials to replace expensive, heavy-metal-based fluorophores. Various CQDs have also been used as or doped into the photoanode, counter electrode, hole transport layer (HTL), and electron transport layer (ETL) of dye-sensitized solar cells (DSSCs), organic solar cells (OSC), perovskite solar cells (PSCs), and other PV cell configurations. The addition of CQDs into the various solar cell components has reduced electron recombination, increased charge density, and boosted electron mobility, improving the performance of the PV cells. Enhancing the power conversion efficiency (PCE) of photovoltaic devices is essential in propagating green energy technology. Thus, CQDs offer an affordable, safe, and environmentally friendly method to advance photovoltaic performance.
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