Issue 5, 2019

Tetradic phosphor white light with variable CCT and superlative CRI through organolead halide perovskite nanocrystals

Abstract

In this work, the emission spectral range of halide perovskite nanocrystals is extended from violet to infrared, the widest emission range for halide perovskites to date. This range extension was made possible by a cost-effective solution-based synthesis process that only involves two halides [MAPb(BrxI1−x)3 and MA = CH3NH3]. Furthermore, the correlated-color temperature (CCT) of white light is tuned by blending an appropriate fraction of the as-synthesized blue, green, yellow, and red emitting nanocrystals. This represents one of the first applications of a tetradic phosphor system for maximizing the color rendering index (CRI) for this material. The CCT ranges from warm to cool white (2759–6398 K) and the CRI has a maximum value of 93.95. Thus, this fourfold phosphor approach demonstrates that halide perovskites are promising alternatives to conventional phosphors in the search for low-cost and high-quality white light sources in the next generation of white lighting technology.

Graphical abstract: Tetradic phosphor white light with variable CCT and superlative CRI through organolead halide perovskite nanocrystals

Article information

Article type
Paper
Submitted
26 Febr. 2019
Accepted
28 Febr. 2019
First published
01 Marts 2019
This article is Open Access
Creative Commons BY-NC license

Nanoscale Adv., 2019,1, 1791-1798

Tetradic phosphor white light with variable CCT and superlative CRI through organolead halide perovskite nanocrystals

G. C. Adhikari, P. A. Vargas, H. Zhu, A. Grigoriev and P. Zhu, Nanoscale Adv., 2019, 1, 1791 DOI: 10.1039/C9NA00125E

This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. You can use material from this article in other publications, without requesting further permission from the RSC, provided that the correct acknowledgement is given and it is not used for commercial purposes.

To request permission to reproduce material from this article in a commercial publication, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party commercial publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements