High efficiency nanoparticle solution-processed Cu(In,Ga)(S,Se)2 solar cells
journal contributionposted on 23.10.2017, 13:58 by Alex Eeles, Panagiota Arnou, Jake Bowers, Michael Walls, Stephen Whitelegg, Paul Kirkham, Cary Allen, Stuart Stubbs, Zugang Liu, Ombretta Masala, Christopher Newman, Nigel Pickett
Thin film Cu(In,Ga)(S,Se)2-based (generally referred to as CIGS) solar cells represent a promising alternative to conventional crystalline silicon solar cells due to their high efficiencies, reduced cost and better material utilisation. In recent years it has been demonstrated that it is possible to form thin films by annealing nanoparticulate material such that the nanoparticles coalesce to form large grained thin films. In this paper, we present a 13.8 % efficient CIGS solar cell derived from printed nanoparticle inks. The approach was successfully extended to fabricate monolithic devices on larger substrates. These results demonstrate that low-cost, non-vacuum printing of CIGS nanoparticles has great potential to achieve high efficiencies and reduce the performance gap with the more traditional vacuum co-evaporation and sputtering techniques.
The Nanoco Technologies authors are grateful for financial support from Innovate UK through an Energy Catalyst grant (no. 102235). The Loughborough University authors are grateful for associated funding by EPSRC through grant EP/N508457/1.
- Mechanical, Electrical and Manufacturing Engineering