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GAVRANOVIĆ, S. POSPÍŠIL, J. ZMEŠKAL, O. NOVÁK, V. VANÝSEK, P. ČÁSTKOVÁ, K. CIHLÁŘ, J. WEITER, M.
Originální název
Electrode Spacing as a Determinant of the Output Performance of Planar-Type Photodetectors Based on Methylammonium Lead Bromide Perovskite Single Crystals
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
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.
Klíčová slova
perovskites; methylammonium lead bromide; photodetector; electrode spacing; responsivity; external quantum efficiency; detectivity
Autoři
GAVRANOVIĆ, S.; POSPÍŠIL, J.; ZMEŠKAL, O.; NOVÁK, V.; VANÝSEK, P.; ČÁSTKOVÁ, K.; CIHLÁŘ, J.; WEITER, M.
Vydáno
4. 5. 2022
Nakladatel
AMERICAN CHEMICAL SOCIETY
Místo
WASHINGTON
ISSN
1944-8252
Periodikum
ACS applied materials & interfaces
Ročník
14
Číslo
17
Stát
Spojené státy americké
Strany od
20159
Strany do
20167
Strany počet
9
URL
https://pubs.acs.org/doi/10.1021/acsami.1c24362
BibTex
@article{BUT178385, author="Stevan {Gavranović} and Jan {Pospíšil} and Oldřich {Zmeškal} and Vítězslav {Novák} and Petr {Vanýsek} and Klára {Částková} and Jaroslav {Cihlář} and Martin {Weiter}", title="Electrode Spacing as a Determinant of the Output Performance of Planar-Type Photodetectors Based on Methylammonium Lead Bromide Perovskite Single Crystals", journal="ACS applied materials & interfaces", year="2022", volume="14", number="17", pages="20159--20167", doi="10.1021/acsami.1c24362", issn="1944-8252", url="https://pubs.acs.org/doi/10.1021/acsami.1c24362" }