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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Rao, V. Ramgopal | - |
dc.date.accessioned | 2023-10-21T06:00:27Z | - |
dc.date.available | 2023-10-21T06:00:27Z | - |
dc.date.issued | 2019 | - |
dc.identifier.uri | https://pubs.rsc.org/en/content/articlelanding/2019/mh/c8mh01241e | - |
dc.identifier.uri | http://dspace.bits-pilani.ac.in:8080/xmlui/handle/123456789/12574 | - |
dc.description.abstract | An unprecedented air-stable, n-doped graphene field-effect transistor (GFET) with exceptionally enhanced mobility (500%), and concomitantly increased current density (∼105 A cm−2), using lanthanide macrocyclic complexes [Ln(L1)(NO3)3] (where Ln = La (1) or Ce (2)) is demonstrated. Such n-doped GFETs (n-GFETs) exhibit ambient stability for up to 7200 h, attributed to the inherent robustness of 1 and 2. Achieving stable and symmetric n-GFETs is mutually exclusive and elusive, underlining the significance of both high stability and symmetric electron- and hole-currents illustrated here. Interestingly, the influence of C–H⋯π interaction for the non-covalent charge-transfer between the dopant and GFET is established experimentally for the first time and strongly corroborated through computational investigations. Besides stabilizing n-doped GFETs, the C–H⋯π interaction unravels a previously unknown direction for electronic tuning of graphene. Importantly, spatial selectivity is achieved through sub-monolayer coverage (0.5–3.0 molecules per μm2) of the dopants using the femtojet dispensing route. This approach is synergistically combined with the air-stability of n-GFETs to realise complementary, bottom-gated logic inverters exhibiting the highest gain of 0.275 (at 2 V) and lowest power dissipation (∼30 μW), to realise next-generation molecular electronic devices. | en_US |
dc.language.iso | en | en_US |
dc.publisher | RSC | en_US |
dc.subject | EEE | en_US |
dc.subject | Transconductance | en_US |
dc.subject | Graphene field-effect transistor (GFET) | en_US |
dc.subject | Electronic devices | en_US |
dc.title | Lanthanide complexes as molecular dopants for realizing air-stable n-type graphene logic inverters with symmetric transconductance | en_US |
dc.type | Article | en_US |
Appears in Collections: | Department of Electrical and Electronics Engineering |
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