Stable Light-Emitting Diodes Using Phase-Pure Ruddlesden-Popper Layered Perovskites - Université de Rennes Accéder directement au contenu
Article Dans Une Revue Advanced Materials Année : 2018

Stable Light-Emitting Diodes Using Phase-Pure Ruddlesden-Popper Layered Perovskites

Jean-Christophe Blancon
  • Fonction : Auteur
  • PersonId : 769742
  • IdRef : 186376200
Sergei Tretiak
Pulickel M Ajayan
Richard H Friend
Aditya D Mohite
  • Fonction : Auteur correspondant

Résumé

State-of-the-art light-emitting diodes (LEDs) are made from high-purity alloys of III–V semiconductors, but high fabrication cost has limited their widespread use for large area solid-state lighting. Here, efficient and stable LEDs processed from solution with tunable color enabled by using phase-pure 2D Ruddlesden–Popper (RP) halide perovskites with a formula (CH3(CH2)3NH3)2(CH3NH3)n−1PbnI3n+1 are reported. By using vertically oriented thin films that facilitate efficient charge injection and transport, efficient electroluminescence with a radiance of 35 W Sr−1 cm−2 at 744 nm with an ultralow turn-on voltage of 1 V is obtained. Finally, operational stability tests suggest that phase purity is strongly correlated to stability. Phase-pure 2D perovskites exhibit >14 h of stable operation at peak operating conditions with no droop at current densities of several Amperes cm−2 in comparison to mixtures of 2D/3D or 3D perovskites, which degrade within minutes.

Dates et versions

hal-01674933 , version 1 (03-01-2018)

Identifiants

Citer

Hsinhan Tsai, Wanyi Nie, Jean-Christophe Blancon, Constantinos C Stoumpos, Chan Myae Myae Soe, et al.. Stable Light-Emitting Diodes Using Phase-Pure Ruddlesden-Popper Layered Perovskites. Advanced Materials, 2018, 30 (6), pp.1704217. ⟨10.1002/adma.201704217⟩. ⟨hal-01674933⟩
79 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More