Use of quantum rods for display applications

Abstract

-We examined the use of quantum rods (QRs) in two configurations for display applications, including the backlight and emissive color pixels for liquid crystal and organic light-emitting diode displays, respectively. For the backlight, we used an electrospun nanofiber sheet embedded with QRs, and found the nanofiber-aligned sheet showed polarized emission with a very high outcoupling efficiency. We then fabricated emissive color pixels with QRs using an inkjet printer, and evaluated their optical properties. The color gamut area size was 82% of the BT2020 standard and the overlap with it was 69%.

Quantum‐Dot and Quantum‐Rod Displays – the Next Big Wave

“…Merck demonstrated the use of cadmium selenide/cadmium sulfide (CdSe/CdS) in two configurations for display applications, including the backlight and emissive color pixels for LCD and OLED panels, respectively. 15,16 For the backlight, sheets consisting of nanofibers with embedded QRs were fabricated by collecting electrospun nanofibers on a drum rotating at high speed. The sheets, as shown in Fig.…”

“…(Merck). 15,16 Display Week 2016. Although PL QD/QR displays can achieve very impressive performance in terms of wider color gamut and lower power consumption, EL QD displays possess more advantages, not only in wide color gamut but also in flexibility, fast response, and printable displays.…”

Highly Polarized Fluorescent Film Based on Aligned Quantum Rods by Contact Ink-Jet Printing Method

“…Fluorescent semiconductor quantum rods (QRs) are brought into focus and applied in many photoelectric devices including liquid crystal (LC) display backlights [1], [2]- [4], LC cells [4]- [6], light emitting diodes (LEDs) [7]- [9], microcavities and lasers [10]- [14], solar cells [15]- [17], luminescent solar concentrators (LSC) [18]- [20], and other applications including photocatalytic hydrogen generation [21]- [23] and bioimaging [24]- [27]. Because there are a lot of outstanding properties of QRs covering tunable emission, polarized emission, narrow full width at half maximum (FWHM), and large quasi-Stokes shift [20], [28], [29].…”

“…For these reasons, a lot of researchers are working on the alignment of QRs through different methods to achieve high DOP in large-scale. The alignment strategies include photo-illumination [34]- [36], applying electrical field [37]- [40], evaporation [41], [42], Langmuir-Blodgett (LB) assembly [43], [44], coffee stain effect [12], [13], [45], capillary effect [11], superlattice [46], [47], nanostructure assisted assembly [48]- [50], electrospinning [1], [3], [51], rubbing [9], [52], [53], stretching [2], [9], and vertical growth [16], [54]. However, all of these methods are not perfect enough.…”

P‐122: High Quantum Yield Green and Red CdSe/CdS Dot‐in‐Rods and Their Electroluminescent Light Emitting Diodes

“…CdSe/CdS dot-in-rods (DiRs) are gradually brought into our focus because of their excellent properties of tunable emission, narrow bandwidth, polarized emission, and large Stokes-shift. [1][2][3] Until now, they have been applied in many optoelectronic technologies, such as solar cells [4][5], luminescent solar concentrators [6][7], microcavities [8][9] liquid crystal (LC) display backlight [10][11][12], light emitting diodes (LEDs) [13][14][15].…”