Abstract
We report a surface ion transfer method to synthesise ternary alloy CdS(1-x)Se(x) (0 ≤x≤ 1) quantum dots (QDs) in situ on TiO(2) nanoparticles. By tuning the content of selenium in such quantum dots, the optical absorption spectra can be controllably widened to cover the most of the visible light range. The electron transport of such QDs can be modulated by changing the interfacial electronic energy between CdS(1-x)Se(x) QDs and TiO(2) nanoparticles. The QDs with optimized selenium content (x = 0.72) give a balance between a broad optical absorption and a suitable energy band alignment. The homogenous alloy CdS(1-x)Se(x) QDs achieve a maximum light-harvesting efficiency over 90%, and generate a photocurrent density larger than 10 mA cm(-2), which is 2.6- and 1.4-times that of binary CdS and CdSe QDs sensitized photovoltaic devices.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
