Imperial College London
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Professor Matthew J. Fuchter

Faculty of Natural Sciences, Department of Chemistry

Professor of Chemistry
 
 
 
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Contact

 

+44 (0)20 7594 5815m.fuchter

 
 
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Location

 

110DMolecular Sciences Research HubWhite City Campus

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Summary

 

Publications

Citation

BibTex format

@article{Furlan:2022:10.1002/adom.202201816,
author = {Furlan, F and Nodari, D and Palladino, E and Angela, E and Mohan, L and Briscoe, J and Fuchter, MJ and Macdonald, TJ and Grancini, G and McLachlan, MA and Gasparini, N},
doi = {10.1002/adom.202201816},
journal = {Advanced Optical Materials},
pages = {1--8},
title = {Tuning Halide Composition allows low dark current perovskite photodetectors with high specific detectivity},
url = {http://dx.doi.org/10.1002/adom.202201816},
volume = {10},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Tuning halide composition in perovskites is a powerful approach demonstrated to enhance the performance of perovskite photovoltaic devices where such compositional modifications drive improvements in open-circuit voltage (Voc) and a reduction in nonradiative voltage losses. Similarly, photodetectors (PDs) operate as light to current conversion devices hence it is relevant to investigate whether performance enhancements can be achieved by similar strategies. Herein, perovskite PDs are fabricated with an inverted photodiode configuration based on a MAPb(I1-xBrx)3 perovskite (MA = methylammonium) active layer over the x = 0–0.25 composition range. Interestingly, it has been found that increasing the Br content up to 0.15 (15%) leads to a significant reduction in dark current (Jd), with values as low as 1.3 × 10−9 A cm−2 being achieved alongside a specific detectivity of 8.7 × 1012 Jones. Significantly, it has been observed an exponential relationship between the Jd of devices and their Voc over the 0–15% Br range. The superior performances of the 15% Br-containing devices are attributed to the reduction of trap states, a better charge extraction of photogenerated carriers, and an improvement in photoactive layer morphology and crystallinity.
AU  - Furlan,F
AU  - Nodari,D
AU  - Palladino,E
AU  - Angela,E
AU  - Mohan,L
AU  - Briscoe,J
AU  - Fuchter,MJ
AU  - Macdonald,TJ
AU  - Grancini,G
AU  - McLachlan,MA
AU  - Gasparini,N
DO  - 10.1002/adom.202201816
EP  - 8
PY  - 2022///
SN  - 2195-1071
SP  - 1
TI  - Tuning Halide Composition allows low dark current perovskite photodetectors with high specific detectivity
T2  - Advanced Optical Materials
UR  - http://dx.doi.org/10.1002/adom.202201816
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000864410800001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://onlinelibrary.wiley.com/doi/10.1002/adom.202201816
UR  - http://hdl.handle.net/10044/1/100366
VL  - 10
ER  -
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