Double perovskite Cs2AgBiBr6 radiation sensor: synthesis and characterization of single crystals

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F22%3A10453416" target="_blank" >RIV/00216208:11320/22:10453416 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ri4RgrIm~F" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=Ri4RgrIm~F</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s10853-021-06847-5" target="_blank" >10.1007/s10853-021-06847-5</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Double perovskite Cs2AgBiBr6 radiation sensor: synthesis and characterization of single crystals

Popis výsledku v původním jazyce

Single crystals of lead-free halide double perovskite Cs(2)AgBiBr(6) sensor material manifest a remarkable potential for application in radiation detection and imaging. In this study, the purity and crystallinity of solution-grown Cs(2)AgBiBr(6) single crystals with cubic Fm 3m symmetry have been corroborated by powder XRD measurements, while the single crystal XRD patterns reveal the dominant {111} lattice planes parallel to the sample surfaces. A wider range of lower resistivity values (10^6-10^9 Ωcm) was obtained from the I-V measurements compared to the 1.55 x 10^9-6.65 x 10^10 Ωcm values from the van der Pauw method, which is typically higher for the Ag than for the carbon paint electrodes. Charge-carrier mobility values estimated from the SCLC method for the carbon paint-Cs(2)AgBiBr(6) (1.90-4.82 cm^2 V^(-1) s^(-1)) and the Ag-Cs(2)AgBiBr(6) (0.58-4.54 cm^2 V^(-1) s^(-1)) including the density of trap states (10^9-10^10 cm^(-3)) are comparable. Similar values of 1.89 cm^2 V^(-1) s^(-1) and 2.36 cm^2 V^(-1) s^(-1) are derived from the Hall effect measurements for a sample with carbon and Ag electrodes, respectively. The key electrical parameters including the X-ray photoresponse measurements indicate that the Cs(2)AgBiBr(6) samples synthesized in this study satisfy requirements for radiation sensors.

Název v anglickém jazyce

Double perovskite Cs2AgBiBr6 radiation sensor: synthesis and characterization of single crystals

Popis výsledku anglicky

Single crystals of lead-free halide double perovskite Cs(2)AgBiBr(6) sensor material manifest a remarkable potential for application in radiation detection and imaging. In this study, the purity and crystallinity of solution-grown Cs(2)AgBiBr(6) single crystals with cubic Fm 3m symmetry have been corroborated by powder XRD measurements, while the single crystal XRD patterns reveal the dominant {111} lattice planes parallel to the sample surfaces. A wider range of lower resistivity values (10^6-10^9 Ωcm) was obtained from the I-V measurements compared to the 1.55 x 10^9-6.65 x 10^10 Ωcm values from the van der Pauw method, which is typically higher for the Ag than for the carbon paint electrodes. Charge-carrier mobility values estimated from the SCLC method for the carbon paint-Cs(2)AgBiBr(6) (1.90-4.82 cm^2 V^(-1) s^(-1)) and the Ag-Cs(2)AgBiBr(6) (0.58-4.54 cm^2 V^(-1) s^(-1)) including the density of trap states (10^9-10^10 cm^(-3)) are comparable. Similar values of 1.89 cm^2 V^(-1) s^(-1) and 2.36 cm^2 V^(-1) s^(-1) are derived from the Hall effect measurements for a sample with carbon and Ag electrodes, respectively. The key electrical parameters including the X-ray photoresponse measurements indicate that the Cs(2)AgBiBr(6) samples synthesized in this study satisfy requirements for radiation sensors.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

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

Název periodika

Journal of Materials Science [online]

ISSN

1573-4803

e-ISSN

—

Svazek periodika

57

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

17

Strana od-do

2758-2774

Kód UT WoS článku

000743012000002

EID výsledku v databázi Scopus

2-s2.0-85123121969