Self-Organized Carbazole Phosphonic Acid Additives at Buried Interface Enhance Efficiency of Blue Perovskite LEDs

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27740%2F24%3A10255867" target="_blank" >RIV/61989100:27740/24:10255867 - isvavai.cz</a>

Výsledek na webu

<a href="https://pubs.acs.org/doi/10.1021/acsenergylett.4c01674" target="_blank" >https://pubs.acs.org/doi/10.1021/acsenergylett.4c01674</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1021/acsenergylett.4c01674" target="_blank" >10.1021/acsenergylett.4c01674</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Self-Organized Carbazole Phosphonic Acid Additives at Buried Interface Enhance Efficiency of Blue Perovskite LEDs

Popis výsledku v původním jazyce

Carbazole phosphonic acids (CPAs) that are used in self-assembled monolayers (SAMs) are well-reported. Yet, an understanding of their broader application still needs to be fully established. In this work, we demonstrate that incorporating CPAs into blue quasi-2D perovskite precursors as additives is an effective strategy for fine-tuning phase distribution and enhancing the radiative characteristics of the resultant films. [2-(9H-Carbazol-9-yl)ethyl]phosphonic acid (2PACz) emerges as the most effective molecule for improving device performance. Significantly, when the perovskite film is deposited onto a hole injection structure of ITO/Mg0.1Ni0.9Ox/SAM/poly(9-vinylcarbazole) (PVK), 2PACz preferentially migrates to the PVK/perovskite interface. This phenomenon is driven by the strong interaction between the carbazole components of both PVK and 2PACz, leading to a stabilized interface. Coupled with the controlled phase distribution of the perovskite, this approach results in a marked increase in external quantum efficiency for blue perovskite LEDs, advancing from 11% to beyond 15%. These insights underscore the versatility of CPAs in the development of high-efficiency optoelectronic devices.

Název v anglickém jazyce

Self-Organized Carbazole Phosphonic Acid Additives at Buried Interface Enhance Efficiency of Blue Perovskite LEDs

Popis výsledku anglicky

Carbazole phosphonic acids (CPAs) that are used in self-assembled monolayers (SAMs) are well-reported. Yet, an understanding of their broader application still needs to be fully established. In this work, we demonstrate that incorporating CPAs into blue quasi-2D perovskite precursors as additives is an effective strategy for fine-tuning phase distribution and enhancing the radiative characteristics of the resultant films. [2-(9H-Carbazol-9-yl)ethyl]phosphonic acid (2PACz) emerges as the most effective molecule for improving device performance. Significantly, when the perovskite film is deposited onto a hole injection structure of ITO/Mg0.1Ni0.9Ox/SAM/poly(9-vinylcarbazole) (PVK), 2PACz preferentially migrates to the PVK/perovskite interface. This phenomenon is driven by the strong interaction between the carbazole components of both PVK and 2PACz, leading to a stabilized interface. Coupled with the controlled phase distribution of the perovskite, this approach results in a marked increase in external quantum efficiency for blue perovskite LEDs, advancing from 11% to beyond 15%. These insights underscore the versatility of CPAs in the development of high-efficiency optoelectronic devices.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10403 - Physical chemistry

Projekt

—

Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

ACS Energy Letters

ISSN

2380-8195

e-ISSN

—

Svazek periodika

9

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

4715-4723

Kód UT WoS článku

001307620900001

EID výsledku v databázi Scopus

2-s2.0-85202931370