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Publication

Microengineered CH3NH3PbI3 Nanowire/Graphene Phototransistor for Low-Intensity Light Detection at Room Temperature

László Forró, Arnaud Magrez, Bálint Náfrádi, Endre Horvath, Richard Gaal, Massimo Spina, Mario Joe Lehmann, Laurent Syavoch Bernard
2015
Journal Articles

Abstract

The first hybrid phototransistors are reported where the performance of a network of photoactive CH3NH3PbI3 nanowires is enhanced by CVD-grown monolayer graphene. These devices show responsivities as high as ≈2.6 × 106 A W-1 in the visible range, showing potential as room-temperature single-electron detectors. © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Official source

https://infoscience.epfl.ch/entities/publication/dd1a63ab-df48-4666-8189-2a4072ff1e48

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László Forró, Arnaud Magrez, Bálint Náfrádi, Endre Horvath, Richard Gaal, Massimo Spina, Mario Joe Lehmann, Laurent Syavoch Bernard
2015
Journal Articles

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/dd1a63ab-df48-4666-8189-2a4072ff1e48

About this result

Related concepts (19)

Photodetector

Photodetectors, also called photosensors, are sensors of light or other electromagnetic radiation. There is a wide variety of photodetectors which may be classified by mechanism of detection, such as photoelectric or photochemical effects, or by various performance metrics, such as spectral response. Semiconductor-based photodetectors typically photo detector have a p–n junction that converts light photons into current. The absorbed photons make electron–hole pairs in the depletion region.

Graphene

Graphene (ˈgræfiːn) is an allotrope of carbon consisting of a single layer of atoms arranged in a hexagonal lattice nanostructure. The name is derived from "graphite" and the suffix -ene, reflecting the fact that the graphite allotrope of carbon contains numerous double bonds. Each atom in a graphene sheet is connected to its three nearest neighbors by σ-bonds and a delocalised π-bond, which contributes to a valence band that extends over the whole sheet.

Resting potential

A relatively static membrane potential which is usually referred to as the ground value for trans-membrane voltage. The relatively static membrane potential of quiescent cells is called the resting membrane potential (or resting voltage), as opposed to the specific dynamic electrochemical phenomena called action potential and graded membrane potential. Apart from the latter two, which occur in excitable cells (neurons, muscles, and some secretory cells in glands), membrane voltage in the majority of non-excitable cells can also undergo changes in response to environmental or intracellular stimuli.

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