Pregled bibliografske jedinice broj: 973058
Vertically Aligned Carbon Nanotubes as Electrodes in Perovskite Single Crystal Light Emitting Electrochemical Cells
Vertically Aligned Carbon Nanotubes as Electrodes in Perovskite Single Crystal Light Emitting Electrochemical Cells // Manep 2018
Les Diablerets: Manep, 2018. str. 1-26 (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 973058 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Vertically Aligned Carbon Nanotubes as Electrodes in Perovskite Single Crystal Light Emitting Electrochemical Cells
Autori
Andričević, Pavao ; Mettan, Xavier ; Kollar, Marton ; Nafradi, Balint ; Sienkiewitz, Andrzej ; Garma, Tonko ; Forro, Laszlo ; Horvath, Endre
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
Manep 2018
/ - Les Diablerets : Manep, 2018, 1-26
Skup
Manep 2018
Mjesto i datum
Les Diablerets, Švicarska, 29.08.2018. - 31.08.2018
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
methylammonium lead bromide ; vertically aligned carbon nanotube ; Photodetector ; low light intensities p-i-n heterojunction structure ight-emitting
Sažetak
We demonstrate that single crystals of methylammonium lead bromide (MAPbBr3) could be grown directly on vertically aligned carbon nanotube (VACNT) forests. The fast-growing MAPbBr3 single crystals engulfed the protogenetic inclusions in the form of individual CNTs, thus resulting in a threedimensionally enlarged photosensitive interface. Photodetector devices were obtained, detecting low light intensities ( 20 nW) from UV range to 550 nm. Moreover, bright green electroluminescence of the MAPbBr3 single crystals, using symmetrical VACNT electrodes, was observed at room temperature for both polarities. The electroluminescence spectra and light intensity was recorded from room temperature to cryogenic temperatures (20 K). The underlying mechanism behind the light emission is the well documented ion migration. In fact charged ions or vacancies inside the perovskite, drift under an external electric field accumulating at the cathode and anode, forming a p-i-n heterojunction structure. These characteristics have a strong similarity with the operational mechanism of polymer light- emitting electrochemical cells (LECs), especially the device structure and the involvement of mobile ions for efficient electroluminescence. This reveals that vertically aligned CNTs can be used as electrodes in operationally stable perovskite- based optoelectronic devices and can serve as a versatile platform for future selective electrode development.
Izvorni jezik
Engleski
Znanstvena područja
Fizika, Elektrotehnika
Napomena
ERC AdG 2014
POVEZANOST RADA
Ustanove:
Fakultet elektrotehnike, strojarstva i brodogradnje, Split
