Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 7, Issue 17, Pages 10225-10230Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ta01052a
Keywords
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Funding
- National Basic Research Program (973 Program) of China [2013CB933301, 2018YFA0306100]
- National Natural Science Foundation of China [51272038, 51302030]
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Colloidal heterostructured CuGaS2 (CGS)/CdS core/shell quantum dots (QDs) with a wurtzite (WZ) phase were synthesized via a facile two-step technique. As compared to the bare CGS QDs, the optical properties of such heterostructured CGS/CdS core/shell QDs were tailored to show largely enhanced light absorption in the visible range and an emission peak in the near-infrared (NIR) region at a wavelength of similar to 816 nm. As proof of concept, these core/shell QDs were used as light absorbers to fabricate a photoelectrochemical (PEC) cell, which exhibited a maximum saturated photocurrent density of similar to 6.5 mA cm(-2) and outstanding stability under standard one sun illumination (AM 1.5G, 100 mW cm(-2)). The results indicate that these NIR core/shell QDs are promising candidates for future QD-based optoelectronic technologies such as QD-sensitized solar cells (QDSCs).
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