Antimony-Doped Tin\nOxide Hole Injection Interlayer\nImproving the Efficiency of Perovskite Nanocrystal Light Emitting\nDiodes

Abstract

We present significant performance enhancement of CsPbBr₃ perovskite nanocrystal (NC) light emitting diodes (PNC LEDs)\nby\nincorporation of a solution processed doped metal oxide hole injection\ninterlayer consisting of 10 atom % doped antimony tin oxide (ATO)\nwithin the PNC LEDs device architecture. The incorporation of an ATO\ninterlayer between ITO and poly-TPD improves the bottom electrode\nhole injection properties and provides charge balanced PNC LEDs that\nshow three and half times increased luminance, lower turn-on voltage,\nand improved maximum current and power efficiency compared to reference\nCsPbBr₃ PNC LEDs incorporating the commonly used PEDOT:PSS\nhole injection interlayer.