Coverage Contact Control of Benzoxazole-Based SAMs to Enhance the Operational Performance of Perovskite Nanocrystal Light-Emitting Diodes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F26%3A0197227" target="_blank" >RIV/00216305:26620/26:0197227 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216275:25310/25:39923394

Výsledek na webu

<a href="https://advanced.onlinelibrary.wiley.com/doi/10.1002/admi.202400884" target="_blank" >https://advanced.onlinelibrary.wiley.com/doi/10.1002/admi.202400884</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/admi.202400884" target="_blank" >10.1002/admi.202400884</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Coverage Contact Control of Benzoxazole-Based SAMs to Enhance the Operational Performance of Perovskite Nanocrystal Light-Emitting Diodes

Popis výsledku v původním jazyce

Perovskite light-emitting diodes (PeLEDs) have emerged as a prominent topic within optoelectronic research. Despite remarkable advancements, this technology still faces challenges that must be addressed for successful commercialization. Typical device architectures employ PEDOT:PSS as hole transporting material (HTM). However, besides its expensive cost, PEDOT:PSS has been reported to cause issues with efficiency and long-term stability. Molecular self-assembled monolayers (SAMs) have arisen as potential HTMs, not just to overcome these drawbacks but to enhance the interface properties and performance of LEDs. This technology has been efficiently applied in PeLEDs, but its use in devices based on perovskite nanocrystals (PNCs) remain underexplored. In this work, two benzoxazole derivatives have been analyzed as SAMs to conform the hole selective contact in CsPbBr3 PNCs-based LEDs. The devices demonstrate improved optoelectronic properties compared to the reference composed of PEDOT:PSS, attributed to a suitable band alignment and an enhanced charge injection. Furthermore, optimizing the deposition technique of SAMs on the conducting substrate by dip- or spin-coating has allowed the preparation of efficient LEDs exhibiting external quantum efficiencies (EQEs) up to 6.8% with 300 s of operational stability. This research aims to provide extensive insights into applying SAMs to design PeLEDs with improved carrier mobility.

Název v anglickém jazyce

Coverage Contact Control of Benzoxazole-Based SAMs to Enhance the Operational Performance of Perovskite Nanocrystal Light-Emitting Diodes

Popis výsledku anglicky

Perovskite light-emitting diodes (PeLEDs) have emerged as a prominent topic within optoelectronic research. Despite remarkable advancements, this technology still faces challenges that must be addressed for successful commercialization. Typical device architectures employ PEDOT:PSS as hole transporting material (HTM). However, besides its expensive cost, PEDOT:PSS has been reported to cause issues with efficiency and long-term stability. Molecular self-assembled monolayers (SAMs) have arisen as potential HTMs, not just to overcome these drawbacks but to enhance the interface properties and performance of LEDs. This technology has been efficiently applied in PeLEDs, but its use in devices based on perovskite nanocrystals (PNCs) remain underexplored. In this work, two benzoxazole derivatives have been analyzed as SAMs to conform the hole selective contact in CsPbBr3 PNCs-based LEDs. The devices demonstrate improved optoelectronic properties compared to the reference composed of PEDOT:PSS, attributed to a suitable band alignment and an enhanced charge injection. Furthermore, optimizing the deposition technique of SAMs on the conducting substrate by dip- or spin-coating has allowed the preparation of efficient LEDs exhibiting external quantum efficiencies (EQEs) up to 6.8% with 300 s of operational stability. This research aims to provide extensive insights into applying SAMs to design PeLEDs with improved carrier mobility.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10400 - Chemical sciences

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

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

Název periodika

Advanced Materials Interfaces

ISSN

2196-7350

e-ISSN

2196-7350

Svazek periodika

12

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

DE - Spolková republika Německo

Počet stran výsledku

7

Strana od-do

—

Kód UT WoS článku

001391755300001

EID výsledku v databázi Scopus

2-s2.0-85213854981