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| Content Provider | Springer Nature Link |
|---|---|
| Author | Fischereder, Achim Schenk, Alexander Rath, Thomas Haas, Wernfried Delbos, Sébastien Gougaud, Corentin Naghavi, Negar Pateter, Angelika Saf, Robert Schenk, Dorith Edler, Michael Bohnemann, Kathrin Reichmann, Angelika Chernev, Boril Hofer, Ferdinand Trimmel, Gregor |
| Copyright Year | 2012 |
| Abstract | The quaternary semiconductor copper zinc tin sulfide (Cu2ZnSnS4, CZTS) is one of the most promising alternatives to Ga and In based semiconductors for thin film solar cells. It consists of non-toxic, cheap, and abundant elements and displays highly beneficial optical as well as electronic properties for photovoltaic applications. In this work we present a solution-based preparation method for CZTS thin films using exclusively metal xanthates as precursor materials. The introduction of branched alkyl side chains (3,3-dimethyl-2-butyl) into the metal xanthates leads to highly soluble precursors with low decomposition temperatures. In addition, these precursors already contain the sulfur needed for the formation of the metal sulfide. Therefore, no external sulfur source such as thiourea, thioacetamide, or elemental sulfur is necessary. For the preparation of CZTS thin films, solutions containing these metal xanthates were used to coat precursor layers, which were subsequently annealed at temperatures between 180 and 350 °C. Depending on the temperature, nanocrystalline films with primary crystallite sizes ranging from 3 nm (180 °C) up to approximately 43 nm (350 °C) were obtained. A combined X-ray diffraction, Raman spectroscopy, and TEM-EDX study showed that a precursor solution with a Cu/(Zn + Sn) ratio of 0.6 has to be used to obtain CZTS films, which show high optical absorption (>2 × 105 cm−1) and an optical band gap of approximately 1.31 eV. First experiments concerning photovoltaic activity of the solution processed CZTS layers were carried out. |
| Starting Page | 273 |
| Ending Page | 283 |
| Page Count | 11 |
| File Format | |
| ISSN | 00269247 |
| Journal | Monatshefte für Chemie - Chemical Monthly |
| Volume Number | 144 |
| Issue Number | 3 |
| e-ISSN | 14344475 |
| Language | English |
| Publisher | Springer Vienna |
| Publisher Date | 2013-01-09 |
| Publisher Place | Vienna |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Material science Chalcogenides Raman spectroscopy Electron microscopy Mass spectroscopy Thin film solar cells Chemistry/Food Science Organic Chemistry Inorganic Chemistry Analytical Chemistry Physical Chemistry Theoretical and Computational Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry |
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