In-situ thermal fabrication of photodetectors based on methylammonium lead bromide perovskite

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F23%3APU150617" target="_blank" >RIV/00216305:26310/23:PU150617 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1063/5.0163726" target="_blank" >https://doi.org/10.1063/5.0163726</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0163726" target="_blank" >10.1063/5.0163726</a>

Jazyk výsledku

angličtina

Název v původním jazyce

In-situ thermal fabrication of photodetectors based on methylammonium lead bromide perovskite

Popis výsledku v původním jazyce

This paper presents low cost fabrication method of MAPbBr3 crystalline structures directly on the polylactic acid (PLA) carbon-coated substrates. Fabrication was carried out using three different crystallization processes: inverse temperature crystallization (ITC), anti-solvent vapor-assisted crystallization (AVC) and combination of both methods. This paper also includes the study of crystallization kinetics for both the perovskite and its precursors. Moreover, temperature modulated space-charge-limited current method (TM-SCLC) was applied to the measured current-voltage characteristics to estimate the concentration of free and trapped charge carriers, the microscopic mobility of free charge carriers, the thermodynamic position of the Fermi level as well as the position of localized states and their concentration. Based on the acquired data we determined following microscopic carrier mobilities and thermodynamic Fermi level positions: μ+/μ− ≈ 0.2/4.0 cm2/V/s, ΔEF ≈ –0.48 eV for PbBr2, μ+/μ− ≈ 10/10 cm2/V/s, ΔEF ≈ –0.575 eV for MABr, and μ+/μ− ≈ 10/300 cm2/V/s, ΔEF ≈ –0.57 eV for MAPbBr3). By comparing our model with literature data (bandgap width, permittivity, effective mass of carriers, etc.) we found and characterized the monoenergetic (bi-exponential) localized states near Fermi level of the studied materials (deep traps for PbBr2, shallow traps for MAPbBr3, and states at the Fermi level for MABr).

Název v anglickém jazyce

In-situ thermal fabrication of photodetectors based on methylammonium lead bromide perovskite

Popis výsledku anglicky

This paper presents low cost fabrication method of MAPbBr3 crystalline structures directly on the polylactic acid (PLA) carbon-coated substrates. Fabrication was carried out using three different crystallization processes: inverse temperature crystallization (ITC), anti-solvent vapor-assisted crystallization (AVC) and combination of both methods. This paper also includes the study of crystallization kinetics for both the perovskite and its precursors. Moreover, temperature modulated space-charge-limited current method (TM-SCLC) was applied to the measured current-voltage characteristics to estimate the concentration of free and trapped charge carriers, the microscopic mobility of free charge carriers, the thermodynamic position of the Fermi level as well as the position of localized states and their concentration. Based on the acquired data we determined following microscopic carrier mobilities and thermodynamic Fermi level positions: μ+/μ− ≈ 0.2/4.0 cm2/V/s, ΔEF ≈ –0.48 eV for PbBr2, μ+/μ− ≈ 10/10 cm2/V/s, ΔEF ≈ –0.575 eV for MABr, and μ+/μ− ≈ 10/300 cm2/V/s, ΔEF ≈ –0.57 eV for MAPbBr3). By comparing our model with literature data (bandgap width, permittivity, effective mass of carriers, etc.) we found and characterized the monoenergetic (bi-exponential) localized states near Fermi level of the studied materials (deep traps for PbBr2, shallow traps for MAPbBr3, and states at the Fermi level for MABr).

Druh

J_SC - Článek v periodiku v databázi SCOPUS

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

<a href="/cs/project/GJ20-29499Y" target="_blank" >GJ20-29499Y: Nové monokrystaly perovskitů pro fotodetekci</a><br>

Návaznosti

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

Rok uplatnění

2023

Kód důvěrnosti údajů

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

Název periodika

AIP Conference Proceedings

ISSN

1551-7616

e-ISSN

—

Svazek periodika

2894

Číslo periodika v rámci svazku

2023

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

—

EID výsledku v databázi Scopus

2-s2.0-85177093388