Combinatorial study of co-sputtered Cu

M. Valentini, C. Malerba, E. Salza, M. De Luca, M. Capizzi, A. Mittiga

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

In this work we investigate the role of stoichiometry variations in Cu2ZnSnS4thin films obtained via sulfurization of precursor grown by co-sputtering of binary sulphides. Combinatorially graded thin-film Cu-Zn-Sn-S library samples spanning a large region of the ternary Cu2S-ZnS-SnS2phase diagram were deposited at temperatures below 110°C and subsequently sulfurized at 550 °C in a tube furnace using a stoichiometric excess of sulfur. We present some results on the influence of chemical composition, measured by EDX, on the morphological and mechanical properties of the films. The films were also processed to obtain a matrix of small area complete photovoltaic devices. In this way the correlation between the stoichiometry and the device performances can be clarified. Finally, several interesting devices were more completely characterized by measuring J-V characteristic curves, the External Quantum Efficiency (EQE) and by looking at their photoluminescence (PL) spectrum trying to confirm a recently suggested correlation between PL peak energies and photovoltaic performances.
Original languageEnglish
DOIs
Publication statusPublished - 15 Oct 2014
Event40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States
Duration: 15 Oct 2014 → …

Conference

Conference40th IEEE Photovoltaic Specialist Conference, PVSC 2014
CountryUnited States
CityDenver
Period15/10/14 → …

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All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

Cite this

Valentini, M., Malerba, C., Salza, E., De Luca, M., Capizzi, M., & Mittiga, A. (2014). Combinatorial study of co-sputtered Cu. Paper presented at 40th IEEE Photovoltaic Specialist Conference, PVSC 2014, Denver, United States. https://doi.org/10.1109/PVSC.2014.6924953