Imperial College London

ProfessorThomasAnthopoulos

Faculty of Natural SciencesDepartment of Physics

Visiting Professor
 
 
 
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Contact

 

+44 (0)20 7594 6669thomas.anthopoulos Website

 
 
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Assistant

 

Mrs Carolyn Dale +44 (0)20 7594 7579

 
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Location

 

1111Blackett LaboratorySouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Georgiadou:2019:10.1002/adfm.201901371,
author = {Georgiadou, DG and Lin, YH and Lim, J and Ratnasingham, S and McLachlan, MA and Snaith, HJ and Anthopoulos, TD},
doi = {10.1002/adfm.201901371},
journal = {Advanced Functional Materials},
title = {High Responsivity and Response Speed Single-Layer Mixed-Cation Lead Mixed-Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large-Area Rigid and Flexible Substrates},
url = {http://dx.doi.org/10.1002/adfm.201901371},
year = {2019}
}

RIS format (EndNote, RefMan)

TY  - JOUR
AB - © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Mixed-cation lead mixed-halide perovskites are employed as the photoactive material in single-layer solution-processed photodetectors fabricated with coplanar asymmetric nanogap Al–Au and indium tin oxide–Al electrodes. The nanogap electrodes, bearing an interelectrode distance of ≈10 nm, are patterned via adhesion lithography, a simple, low-cost, and high-throughput technique. Different electrode shapes and sizes are demonstrated on glass and flexible plastic substrates, effectively engineering the device architecture, and, along with perovskite film and material optimization, paving the way toward devices with tunable operational characteristics. The optimized coplanar nanogap junction perovskite photodetectors show responsivities up to 33 A W −1 , specific detectivity on the order of 10 11 Jones, and response times below 260 ns, while retaining a low dark current (0.3 nA) under −2 V reverse bias. These values outperform the vast majority of perovskite photodetectors reported so far, while avoiding the complicated fabrication steps involved in conventional multilayer device structures. This work highlights the promising potential of the proposed asymmetric nanogap electrode architecture for application in the field of flexible optoelectronics.
AU - Georgiadou,DG
AU - Lin,YH
AU - Lim,J
AU - Ratnasingham,S
AU - McLachlan,MA
AU - Snaith,HJ
AU - Anthopoulos,TD
DO - 10.1002/adfm.201901371
PY - 2019///
SN - 1616-301X
TI - High Responsivity and Response Speed Single-Layer Mixed-Cation Lead Mixed-Halide Perovskite Photodetectors Based on Nanogap Electrodes Manufactured on Large-Area Rigid and Flexible Substrates
T2 - Advanced Functional Materials
UR - http://dx.doi.org/10.1002/adfm.201901371
ER -