Abstract
The luminescent down-shifting characteristics of CdSe /ZnSe /ZnS core /shell /shell quantum dots( QDs) were studied by incorporating the QDs as the down-shifting luminescent material into polymethyl-methacrylate( PMMA). Firstly,the optical high-pass filter with threshold 420 nm was used to cover the solar cell,so as to make the spectral response of the cell almost zero in the waveband range of 300 ~ 420 nm. Then the luminescent down-shifting( LD) layer of QDs was prepared on the external surface of the optical filters,we found the external quantum efficiency( EQE) of solar cell improved. This indicates that LD layer can realize the down-shifting of frequency spectra at300 ~ 420 nm,which is out of the spectral response region of the normal cell. Finally,in order to analyze the possibility of applying quantum dots to solar cells,the minimum fluorescence quantum efficiency( FQE) of the quantum dots was calculated to be 87. 8% according to the measured EQE of solar cell.
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.
