Hydrazine-free solution-deposited CuIn(S,Se)2 solar cells by spray deposition of metal chalcogenides
journal contributionposted on 19.05.2016 by Nayia Arnou, Maikel F.A.M. van Hest, Carl Cooper, Andrei Malkov, Michael Walls, Jake Bowers
Any type of content formally published in an academic journal, usually following a peer-review process.
Solution processing of semiconductors, such as CuInSe2 and its alloys (CIGS), can significantly reduce the manufacturing costs of thin film solar cells. Despite the recent success of solution deposition approaches for CIGS, toxic reagents such as hydrazine are usually involved, which introduce health and safety concerns. Here, we present a simple and safer methodology for the preparation of high-quality CuIn(S, Se)2 absorbers from metal sulfide solutions in a diamine/dithiol mixture. The solutions are sprayed in air, using a chromatography atomizer, followed by a postdeposition selenization step. Two different selenization methods are explored resulting in power conversion efficiencies of up to 8%.
Authors P.A, C.S.C, J.M.W., and J.W.B. are grateful for funding from EPSRC Supergen SuperSolar Hub (EP/J017361/1); EPSRC PVTEAM (EP/L017792/1) and EPRSRC grant EP/ N508457/1 to support this project. P.A. also thanks the SuperSolar Hub for funding a 3 month secondment at the National Renewable Energy Laboratory in Colorado, USA.
- Mechanical, Electrical and Manufacturing Engineering
- Centre for Renewable Energy Systems Technology (CREST)