Photosensitisation of inkjet printed graphene with stable all-inorganic perovskite nanocrystals.

Autor: Austin JS; Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Jubilee Campus, Nottingham, NG8 1BB, UK. Lyudmila.Turyanska@nottingham.ac.uk., Cottam ND; School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK., Zhang C; Key Laboratory of Advanced Display and System Applications, Shanghai University, 149 Yanchang Road, 200072, China., Wang F; Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Jubilee Campus, Nottingham, NG8 1BB, UK. Lyudmila.Turyanska@nottingham.ac.uk., Gosling JH; Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Jubilee Campus, Nottingham, NG8 1BB, UK. Lyudmila.Turyanska@nottingham.ac.uk.; School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK., Nelson-Dummet O; Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Jubilee Campus, Nottingham, NG8 1BB, UK. Lyudmila.Turyanska@nottingham.ac.uk., James TSS; School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK., Beton PH; School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK., Trindade GF; National Physical Laboratory, Teddington, Middlesex, TW11 0LW, UK., Zhou Y; National Physical Laboratory, Teddington, Middlesex, TW11 0LW, UK., Tuck CJ; Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Jubilee Campus, Nottingham, NG8 1BB, UK. Lyudmila.Turyanska@nottingham.ac.uk., Hague R; Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Jubilee Campus, Nottingham, NG8 1BB, UK. Lyudmila.Turyanska@nottingham.ac.uk., Makarovsky O; School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK., Turyanska L; Centre for Additive Manufacturing, Faculty of Engineering, University of Nottingham, Jubilee Campus, Nottingham, NG8 1BB, UK. Lyudmila.Turyanska@nottingham.ac.uk.
Jazyk: angličtina
Zdroj: Nanoscale [Nanoscale] 2023 Feb 02; Vol. 15 (5), pp. 2134-2142. Date of Electronic Publication: 2023 Feb 02.
DOI: 10.1039/d2nr06429d
Abstrakt: All-inorganic perovskite nanocrystals (NCs) with enhanced environmental stability are of particular interest for optoelectronic applications. Here we report on the formulation of CsPbX 3 (X is Br or I) inks for inkjet deposition and utilise these NCs as photosensitive layers in graphene photodetectors, including those based on single layer graphene (SLG) as well as inkjet-printed graphene (iGr) devices. The performance of these photodetectors strongly depends on the device structure, geometry and the fabrication process. We achieve a high photoresponsivity, R > 10 6 A W -1 in the visible wavelength range and a spectral response controlled by the halide content of the perovskite NC ink. By utilising perovskite NCs, iGr and gold nanoparticle inks, we demonstrate a fully inkjet-printed photodetector with R ≈ 20 A W -1 , which is the highest value reported to date for this type of device. The performance of the perovskite/graphene photodetectors is explained by transfer of photo-generated charge carriers from the perovskite NCs into graphene and charge transport through the iGr network. The perovskite ink developed here enabled realisation of stable and sensitive graphene-based photon detectors. Compatibility of inkjet deposition with conventional Si-technologies and with flexible substrates combined with high degree of design freedom provided by inkjet deposition offers opportunities for partially and fully printed optoelectronic devices for applications ranging from electronics to environmental sciences.
Databáze: MEDLINE
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