Unraveling the Mechanism of the Persistent Photoconductivity in InSe and its Doped Counterparts
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924196" target="_blank" >RIV/60461373:22310/22:43924196 - isvavai.cz</a>
Výsledek na webu
<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/adom.202200522" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/adom.202200522</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/adom.202200522" target="_blank" >10.1002/adom.202200522</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
Unraveling the Mechanism of the Persistent Photoconductivity in InSe and its Doped Counterparts
Popis výsledku v původním jazyce
Dopant levels in layered compound InSe have considerable potential in optoelectronic devices. Dopant-induced trap states are essential in determining the optoelectrical properties of semiconductors. However, detailed studies of the persistent photoconductivity (PPC) and related mechanism in doped InSe are still not available. Here, the dependence of excitation energy on the shallow donor level caused by the dopants (Ge, Sn) in InSe is systematically investigated. Notably, prolonged decay time originates from extrinsic Ge, Sn dopants and these doping-assisted states improve the optoelectrical performance of pristine InSe. Those photogenerated carriers are trapped in the Ge, Sn shallow impurities states, which are long-lived enough to be extracted into Au contacts before annihilation. This renders Ge-, Sn-doped InSe photoconductive gain and maximized photocurrent. Sn-doped InSe single crystal device can achieve a maximum responsivity of around 1.7 x 10(6) A W-1 under red light and detectivity of 6.18 x 10(13) Jones. In addition, Hall measurements identify the carrier concentration and the Hall mobility of pristine InSe is significantly changed by Ge and Sn dopants. It is demonstrated that doping Ge, Sn atoms is responsible for the obvious photoconductivity and beneficial for the high-performance photodetector, offering intriguing opportunities for novel holographic memory applications.
Název v anglickém jazyce
Unraveling the Mechanism of the Persistent Photoconductivity in InSe and its Doped Counterparts
Popis výsledku anglicky
Dopant levels in layered compound InSe have considerable potential in optoelectronic devices. Dopant-induced trap states are essential in determining the optoelectrical properties of semiconductors. However, detailed studies of the persistent photoconductivity (PPC) and related mechanism in doped InSe are still not available. Here, the dependence of excitation energy on the shallow donor level caused by the dopants (Ge, Sn) in InSe is systematically investigated. Notably, prolonged decay time originates from extrinsic Ge, Sn dopants and these doping-assisted states improve the optoelectrical performance of pristine InSe. Those photogenerated carriers are trapped in the Ge, Sn shallow impurities states, which are long-lived enough to be extracted into Au contacts before annihilation. This renders Ge-, Sn-doped InSe photoconductive gain and maximized photocurrent. Sn-doped InSe single crystal device can achieve a maximum responsivity of around 1.7 x 10(6) A W-1 under red light and detectivity of 6.18 x 10(13) Jones. In addition, Hall measurements identify the carrier concentration and the Hall mobility of pristine InSe is significantly changed by Ge and Sn dopants. It is demonstrated that doping Ge, Sn atoms is responsible for the obvious photoconductivity and beneficial for the high-performance photodetector, offering intriguing opportunities for novel holographic memory applications.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10402 - Inorganic and nuclear chemistry
Návaznosti výsledku
Projekt
<a href="/cs/project/LTAUSA19034" target="_blank" >LTAUSA19034: Dvoudimenzionální nanomateriály pro aplikace v elektronice</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Ostatní
Rok uplatnění
2022
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Advanced optical materials
ISSN
2195-1071
e-ISSN
—
Svazek periodika
10
Číslo periodika v rámci svazku
20
Stát vydavatele periodika
US - Spojené státy americké
Počet stran výsledku
11
Strana od-do
nestrankovano
Kód UT WoS článku
000832655300001
EID výsledku v databázi Scopus
2-s2.0-85135122001