Full-color laser displays based on organic printed microlaser arrays

Abstract

Laser displays, which exploit characteristic advantages of lasers, represent a promising next-generation display technology based on the ultimate visual experience they provide. However, the inability to obtain pixelated laser arrays as self-emissive full-color panels hinders the application of laser displays in the flat-panel sector. Due to their excellent optoelectronic properties and processability, organic materials have great potential for the production of periodically patterned multi-color microlaser arrays. Here, we demonstrate for the first time full-color laser displays on precisely patterned organic red-green-blue (RGB) microlaser matrices through inkjet printing. Individual RGB laser pixels are realized by doping respective luminescent dyes into the ink materials, resulting in a wide achievable color gamut 45% larger than the standard RGB space. Using as-prepared microlaser arrays as full-color panels, we achieve dynamic laser displays for video playing through consecutive beam scanning. These results represent a major step towards full-color laser displays with outstanding color expression.

Recent Advances in 1D Organic Solid‐State Lasers

“…Solid‐state lasers (SSLs) have undergone rapid development over the past few decades . Particularly, in recent years, developing compact SSLs in micro‐/nanoscale has captured many interests from scientists owing to the widespread applications, such as the on‐chip optical circuits, ultrasensitive sensing, data storage, and laser display . A variety of inorganic materials, such as ZnO, GaAs, and perovskite, have been adopted as the gain materials to realize compact SSLs .…”

Laser Systems and Networks with Organic Nanowires and Nanofibers

“…e) Fabrication of organic microlaser pixel arrays by ultrasonic vibration‐assisted inkjet printing. Reproduced under the terms of the CC‐BY license, https://creativecommons.org/licenses/by/4.0/ . Copyright 2019, The Authors, published by Springer Nature.…”

“…Printing techniques can simultaneously handle multiple materials, precisely positioning and integrating them into large photonic circuits. For instance, red–green–blue (RGB) microlaser pixel arrays have been recently fabricated by Zhao et al (Figure e) . Here, a glass needle is first imbibed in the desired organic ink, which is then sprayed at specific positions onto a hydrophobic substrate, by means of an ultrasonic vibration mechanism.…”

Optically pumped colloidal-quantum-dot lasing in LED-like devices with an integrated optical cavity

“…R ealization of lasers based on solution-processable materials has been a subject of much research across a range of fields including organic semiconductors [1][2][3] , perovskites [4][5][6][7] , and colloidal semiconductor nanomaterials [8][9][10][11][12] . In addition to simplifying fabrication protocols and reducing a device cost, a successful implementation of solution processable lasing devices would help expand the range of applications of lasing technologies into new areas including on-chip integrated photonic circuitry [13][14][15] , medical and biological imaging 16 , chemical sensing 17 , security 18 , and lab-on-a-chip diagnostics 19 .…”

“…The next important milestone is the demonstration of a true lasing action with electrical pumping. Realization of this goal entails resolving several challenges including: (1) incorporation of a lasing cavity into an electroluminescent (EL) device without disrupting charge-carrier injection, (2) overcoming the problem of lasing suppression by conductive layers that are necessary elements of an EL structure, (3) realization of lasing with ultrathin QD active layers to enable electrical pumping, and (4) obtaining high current densities sufficient for achieving population inversion.…”