Electrode Spacing as a Determinant of the Output Performance of Planar-Type Photodetectors Based on Methylammonium Lead Bromide Perovskite Single Crystals
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F22%3APU144915" target="_blank" >RIV/00216305:26310/22:PU144915 - isvavai.cz</a>
Result on the web
<a href="https://pubs.acs.org/doi/10.1021/acsami.1c24362" target="_blank" >https://pubs.acs.org/doi/10.1021/acsami.1c24362</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1021/acsami.1c24362" target="_blank" >10.1021/acsami.1c24362</a>
Alternative languages
Result language
angličtina
Original language name
Electrode Spacing as a Determinant of the Output Performance of Planar-Type Photodetectors Based on Methylammonium Lead Bromide Perovskite Single Crystals
Original language description
Methylammonium lead bromide is a very perspective hybrid semiconductor material, suitable for high-sensitive, filter-free photodetection of electromagnetic radiation. Herein, we studied the effect of electrode spacing on the output performance and stability of planar-type photodetectors based on high-quality NAPbBr, single crystals. Such crystals, as large as 4.5X4.5X1.2 mm(3) were synthesized via the inverse temperature crystallization method and were further used for the fabrication of planar Au/MAPbBr(3)/Au photodetectors with variable electrode spacing (in the range between 125 and 25 mu m). We report that the electrode spacing has a profound impact on photocurrent densities and key detector parameters (responsivity R, external quantum efficiency EQE, and specific detectivity D*). In the studied fivefold electrode spacing, the photocurrent density increased over 4 times, with decreasing active area of the devices. This effect is attributed to intrinsic photocurrent amplification. Based on the transient photocurrent measurements and calculated key parameters, we determined the device sample with the best output performance. The champion sample with an electrode spacing of 50 mu m exhibited great detection ability, especially for a low light intensity of 200 nWcm(-2), for which we calculated the R of 19.55 A W-1, EQE of 4253%, and D* of 3.42 X 10(-12) Jones (cm Hz(1/2) W-1). Moreover, the functional stability of this device showed a minimal reduction of photodetection ability after 2000 cycles, which makes it very promising for the next generation of optoelectronic devices.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20501 - Materials engineering
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
ACS applied materials & interfaces
ISSN
1944-8244
e-ISSN
1944-8252
Volume of the periodical
14
Issue of the periodical within the volume
17
Country of publishing house
US - UNITED STATES
Number of pages
9
Pages from-to
20159-20167
UT code for WoS article
000813041600001
EID of the result in the Scopus database
2-s2.0-85128686336