7 December 2013 Solution processing of next-generation nanocrystal solar cells
Author Affiliations +
Next-generation solar cells will be fabricated from low-cost and earth abundant elements, using processes that are amenable to printing on a variety of light-weight substrates. The utilization of compositionally and structurally controlled colloidal nanocrystals as building blocks for such devices fulfills these criteria. Our recent efforts in developing kesterite Cu2ZnSnS4 (CZTS) nanocrystals, one of the most promising materials to emerge in this area, enable the deposition of CZTS thin-films directly from a variety of solution-processed methods. Nanocrystalline thin films possess poor electronic properties, which precludes their use in solar cell devices. In order to overcome this, thermal treatment steps under an atmosphere of vaporous selenium are applied to induce large scale crystallite growth and the production of selenized CZTSSe films. This process results in a highly photoactive p-type layer. The n-type cadmium sulfide layer is also deposited from solution using chemical bath deposition. We will discuss each of these accomplishments in detail, highlighting the significant challenges that need to be overcome in order to fabricate working CZTSSe thin film solar cells.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
J. van Embden, J. van Embden, A. S. R. Chesman, A. S. R. Chesman, N. W. Duffy, N. W. Duffy, E. Della Gaspera, E. Della Gaspera, J. J. Jasieniak, J. J. Jasieniak, } "Solution processing of next-generation nanocrystal solar cells", Proc. SPIE 8923, Micro/Nano Materials, Devices, and Systems, 89231K (7 December 2013); doi: 10.1117/12.2034067; https://doi.org/10.1117/12.2034067

Back to Top