Electrode Spacing as a Determinant of the Output Performance of Planar-Type Photodetectors Based on Methylammonium Lead Bromide Perovskite Single Crystals

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Electrode Spacing as a Determinant of the Output Performance of Planar-Type Photodetectors Based on Methylammonium Lead Bromide Perovskite Single Crystals

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Electrode Spacing as a Determinant of the Output Performance of Planar-Type Photodetectors Based on Methylammonium Lead Bromide Perovskite Single Crystals

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

ACS applied materials & interfaces

ISSN

1944-8244

e-ISSN

1944-8252

Svazek periodika

14

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

20159-20167

Kód UT WoS článku

000813041600001

EID výsledku v databázi Scopus

2-s2.0-85128686336