Issue 27, 2018

Fully integrated electrochromic-OLED devices for highly transparent smart glasses

Abstract

The integration of energy-saving electrochromic systems with novel functions and features in a single smart multifunctional device promises to achieve remarkable technological advancements for a wide range of consumer products showing more versatility, responsivity to different external inputs, and ability to operate in interactive modes. Here, we report a novel architecture in which a solid-state electrochromic cell and a solid-state organic light emitting diode are fully integrated in a single, highly transparent, solid-state electrochromic OLED device. This multifunctional device is capable of tuning its optical properties such as transmittance (chromic transition) and of producing light by electroluminescence, simultaneously or independently. The rational design of the solid-state electrochromic cell and the highly transparent OLED enables the construction of the integrated device in a monolithic unit. In such a structure the photonic architecture of the OLED device not only guarantees high transmittance, but, operating synergically with the electrochromic component, it outperforms the optical properties and electrochromic responses by the interference phenomenon, achieveing an optical contrast of 57% (ΔTbleaching/colouring @ 650 nm), and a coloration efficiency of 169 cm2 C−1, with very low energy consumption (80 mW cm−2). The OLED component exhibits luminance above the minimum values required for display and lighting applications, which are 300 cd m−2 and above 800 cd m−2, respectively. This result represents a further step towards the development of next-generation multifunctional EC devices such as full solid-state photoelectrochromic devices, and, importantly, this can open the way for new electrochromic “smart” window systems such as retail display windows or display EC glasses for augmented reality.

Graphical abstract: Fully integrated electrochromic-OLED devices for highly transparent smart glasses

Supplementary files

Article information

Article type
Paper
Submitted
09 Apr 2018
Accepted
14 Jun 2018
First published
14 Jun 2018

J. Mater. Chem. C, 2018,6, 7274-7284

Fully integrated electrochromic-OLED devices for highly transparent smart glasses

P. Cossari, M. Pugliese, S. Gambino, A. Cannavale, V. Maiorano, G. Gigli and M. Mazzeo, J. Mater. Chem. C, 2018, 6, 7274 DOI: 10.1039/C8TC01665H

To request permission to reproduce material from this article, 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 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