تقرير
Isotropic conduction and negative photoconduction in ultrathin PtSe$_2$ films
| العنوان: | Isotropic conduction and negative photoconduction in ultrathin PtSe$_2$ films |
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| المؤلفون: | Urban, Francesca, Gity, Farzan, Hurley, Paul K., McEvoy, Niall, Di Bartolomeo, Antonio |
| سنة النشر: | 2020 |
| المجموعة: | Condensed Matter Physics (Other) |
| مصطلحات موضوعية: | Physics - Applied Physics, Condensed Matter - Mesoscale and Nanoscale Physics |
| الوصف: | PtSe$_2$ ultrathin films are used as the channel of back-gated field-effect transistors (FETs) that are investigated at different temperatures and under super-continuous white laser irradiation. The temperature-dependent behavior confirms the semiconducting nature of multilayer PtSe$_2$, with p-type conduction, a hole field-effect mobility up to 40 cm2/(Vs) and significant gate modulation. Electrical conduction measured along different directions shows isotropic transport. A reduction of PtSe$_2$ channel conductance is observed under exposure to light. Such negative photoconductivity is explained by a photogating effect caused by photo-charge accumulation in SiO$_2$ and at the Si/SiO$_2$ interface. Comment: 9 pages, 3 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/5.0021009 |
| URL الوصول: | http://arxiv.org/abs/2007.05842 |
| رقم الأكسشن: | edsarx.2007.05842 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/5.0021009 |
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