Enhanced photoluminescence properties and increased long-term stability of zero-dimensional cesium lead bromide nanocrystals via gas-phase alumina oxide encapsulation (Conference Presentation)

Anton V. Malko

doi:10.1117/12.2551443

9 March 2020 Enhanced photoluminescence properties and increased long-term stability of zero-dimensional cesium lead bromide nanocrystals via gas-phase alumina oxide encapsulation (Conference Presentation)

Anton V. Malko

Author Affiliations +

Proceedings Volume 11269, Synthesis and Photonics of Nanoscale Materials XVII; 112690D (2020) https://doi.org/10.1117/12.2551443
Event: SPIE LASE, 2020, San Francisco, California, United States

Abstract

Cs-based perovskite nanocrystals (PNCs) possess alluring optoelectronic properties through compositional and structural versatility, tunable bandgap, high photoluminescence (PL) quantum yield (QY) and facile chemical synthesis. However, PL properties of solid-state samples suffer from environmental and operational degradation. Here we report alumina (AlOx) encapsulation of 0D Cs4PbBr6 nanocrystal thin films and individual nanoparticles using a modified atomic layer deposition (ALD) method with concurrent exposure of both Al and water precursors in the gas flow. We observed stronger PL intensity, increased PL lifetimes and much improved long-term stability at both film and single PNC level. These findings provide roadmap for ALD utilization to create solid-state perovskite devices.

Conference Presentation

Citation Download Citation

Anton V. Malko "Enhanced photoluminescence properties and increased long-term stability of zero-dimensional cesium lead bromide nanocrystals via gas-phase alumina oxide encapsulation (Conference Presentation)", Proc. SPIE 11269, Synthesis and Photonics of Nanoscale Materials XVII, 112690D (9 March 2020); https://doi.org/10.1117/12.2551443

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available