Pregled bibliografske jedinice broj: 1198347
Mixed cation Dion-Jacobson perovskites for efficient green light emission
Mixed cation Dion-Jacobson perovskites for efficient green light emission // 17th European Powder Diffraction Conference: Book of Abstracts
Zagreb, 2022. str. 138-138 (poster, međunarodna recenzija, sažetak, znanstveni)
CROSBI ID: 1198347 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Mixed cation Dion-Jacobson perovskites for efficient
green light emission
Autori
Molčanov, Lidija ; Qin, Xinshun ; Liu, Fangzhou ; Leung, Tik Lun ; Sun, Wenting ; C. S. Chan, Christopher ; Wong, Kam Sing ; Popović, Jasminka ; Djurišić, Aleksandra B.
Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni
Izvornik
17th European Powder Diffraction Conference: Book of Abstracts
/ - Zagreb, 2022, 138-138
Skup
17th European Powder Diffraction Conference (EPDIC17)
Mjesto i datum
Šibenik, Hrvatska, 31.05.2022. - 03.06.2022
Vrsta sudjelovanja
Poster
Vrsta recenzije
Međunarodna recenzija
Ključne riječi
Dion-Jacobson perovskites ; light emitting diodes
Sažetak
Dion-Jacobson (DJ) perovskites have been demonstrated to be highly promising for improved lifetime and stability of solar cells, but their applications in light emitting diodes (LEDs) have been scarce. A large number of potential spacer ligands have not been explored, offering potential to achieve significant improvements in spectral regions where DJ perovskite-based LEDs lag behind other perovskite counterparts. Therefore, we investigated the effect of the choice of spacer cation on the properties and green light emitting diode applications of DJ perovskites. We found that optimized mixing of the spacer cations results in perovskite films with improved morphology and a change in phase distribution, leading to enhanced funneling and more efficient light emission. Devices containing mixed spacer cations 1, 6-hexanediammonium (HDA) and 1, 10- decanediammonium (DDA) exhibited significant enhancement of the external quantum efficiency (EQE), with a maximum value for DDA0.75HDA0.25 of 9.41% significantly higher than that obtained for pure HDA (1.23%) and DDA (7.28%), as well as increased lifetime with T50 of 70 min for optimized composition, compared to 4 min for pure HDA and 60 min for pure DDA. The maximum EQE can be further increased by triphenylphosphine oxide passivation to 12.85%.
Izvorni jezik
Engleski
Znanstvena područja
Kemija
POVEZANOST RADA
Projekti:
HRZZ-PZS-2019-02-2068 - 2D i kvazi-2D perovskiti: od ciljanog strukturnog dizajna do poboljšane učinkovitosti i stabilnosti (Popović, Jasminka, HRZZ - 2019-02) ( CroRIS)
Ustanove:
Institut "Ruđer Bošković", Zagreb
