Analysis and comparison of different selenization routes for nanoparticle ink deposited Cu(In1-xGax)(SeyS1-y)2 solar cells
conference contributionposted on 09.02.2017, 11:54 by Alex Eeles, Ali AbbasAli Abbas, Nayia Arnou, Jake BowersJake Bowers, Michael WallsMichael Walls, Stephen Whitelegg, Paul Kirkham, Cary Allen, Stuart Stubbs, Zugang Liu, Ombretta Masala, Christopher Newman, Nigel Pickett
This paper investigates the effect of using different selenization sources, namely elemental Se and H2Se, on Cu(In1-xGax)(SeyS1-y)2 devices derived from depositions of nanoparticle inks. Nanoparticles used in this synthesis are chalcogenides (e.g. CuInGaS). The effect of the selenization species has a large effect on the performance and electrical properties of these devices. Elemental selenized devices show higher efficiencies (>16%) compared to H2Se processed devices (<12%). Various techniques are used in this study, including Raman spectroscopy, TEM, I-V-T, EQE, admittance spectroscopy and C-V-T to identify the difference in performance between the two selenization methods. Differences are observed in both the bulk and interface properties of the devices.
The authors would like to acknowledge the support of Innovate UK, project number 102235, and the EPSRC (EP/N508457/1) for the funding.
- Mechanical, Electrical and Manufacturing Engineering