Abstract
In this study, we present the first demonstration of mechanical stacking of solar cells grown via hydride vapor phase epitaxy (HVPE) to fabricate tandem cells. Smart stack technology, in which Pd nanoparticles were used as the bonding mediator, was used for bonding the cells. To prepare the smart stack, the top cells of the tandem structure were peeled from the substrate using the epitaxial lift-off technique. For this purpose, the cell structure was grown on an AlAs sacrificial layer. GaAs solar cells with good performance were fabricated using HVPE, in which the surface roughened by AlAs was restored to flatness by growing a thick GaAs film. The GaAs//InGaAs tandem cells achieved by bonding the GaAs solar cells grown via HVPE with the InGaAs solar cells grown by metal–organic vapor phase epitaxy exhibited a conversion efficiency of 22.6%.
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.
