Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Environmentally friendly Mn-alloyed core/shell quantum dots for high-efficiency photoelectrochemical cells

Author affiliations

Abstract

Colloidal quantum dot (QD)-based photoelectrochemical (PEC) cells are cost-effective devices showing remarkable solar-to-fuel conversion efficiency. However, the extensive use of highly toxic elements (e.g. Pb and Cd) in QDs' synthesis and device fabrication is still a major challenge towards their practical development. Herein, we fabricate a solar-driven PEC cell based on environmentally friendly Mn-alloyed CuInS2 (MnCIS)/ZnS core/shell QDs, showing more favorable band alignment, efficient charge transfer, reduced charge recombination and lower charge transfer resistance with respect to the control device fabricated using unalloyed CuInS2 (CIS)/ZnS core/shell QDs. An unprecedented photocurrent density of ∼5.7 mA cm−2 with excellent stability was obtained for the as-fabricated MnCIS/ZnS core/shell QD-based PEC device when operated under standard one sun irradiation (AM 1.5G, 100 mW cm−2). These results indicate that the transition metal-alloyed environmentally friendly core/shell QDs are promising for next-generation solar technologies.

Graphical abstract: Environmentally friendly Mn-alloyed core/shell quantum dots for high-efficiency photoelectrochemical cells

Back to tab navigation

Supplementary files

Article information


Submitted
23 Jan 2020
Accepted
06 Apr 2020
First published
10 Apr 2020

J. Mater. Chem. A, 2020, Advance Article
Article type
Communication

Environmentally friendly Mn-alloyed core/shell quantum dots for high-efficiency photoelectrochemical cells

R. Wang, X. Tong, A. I. Channa, Q. Zeng, J. Sun, C. Liu, X. Li, J. Xu, F. Lin, G. S. Selopal, F. Rosei, Y. Zhang, J. Wu, H. Zhao, A. Vomiero, X. Sun and Z. M. Wang, J. Mater. Chem. A, 2020, Advance Article , DOI: 10.1039/D0TA00953A

Social activity

Search articles by author

Spotlight

Advertisements