Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/140117
Title: Light-emitting diodes with Cu-doped colloidal quantum wells : from ultrapure green, tunable dual-emission to white light
Authors: Liu, Baiquan
Sharma, Manoj
Yu, Junhong
Shendre, Sushant
Hettiarachchi, Chathuranga
Sharma, Ashma
Yeltik, Aydan
Wang, Lin
Sun, Handong
Dang, Cuong
Demir, Hilmi Volkan
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2019
Source: Liu, B., Sharma, M., Yu, J., Shendre, S., Hettiarachchi, C., Sharma, A., . . . Demir, H. V. (2019). Light-emitting diodes with Cu-doped colloidal quantum wells : from ultrapure green, tunable dual-emission to white light. Small, 15(38), 1901983-. doi:10.1002/smll.201901983
Journal: Small
Abstract: Copper-doped colloidal quantum wells (Cu-CQWs) are considered a new class of optoelectronic materials. To date, the electroluminescence (EL) property of Cu-CQWs has not been revealed. Additionally, it is desirable to achieve ultrapure green, tunable dual-emission and white light to satisfy the various requirement of display and lighting applications. Herein, light-emitting diodes (LEDs) based on colloidal Cu-CQWs are demonstrated. For the 0% Cu-doped concentration, the LED exhibits Commission Internationale de L'Eclairage 1931 coordinates of (0.103, 0.797) with a narrow EL full-wavelength at half-maximum of 12 nm. For the 0.5% Cu-doped concentration, a dual-emission LED is realized. Remarkably, the dual emission can be tuned by manipulating the device engineering. Furthermore, at a high doping concentration of 2.4%, a white LED based on CQWs is developed. With the management of doping concentrations, the color tuning (green, dual-emission to white) is shown. The findings not only show that LEDs with CQWs can exhibit polychromatic emission but also unlock a new direction to develop LEDs by exploiting 2D impurity-doped CQWs that can be further extended to the application of other impurities (e.g., Mn, Ag).
URI: https://hdl.handle.net/10356/140117
ISSN: 1613-6810
DOI: 10.1002/smll.201901983
Rights: This is the accepted version of the following article: Liu, B., Sharma, M., Yu, J., Shendre, S., Hettiarachchi, C., Sharma, A., . . . Demir, H. V. (2019). Light-emitting diodes with Cu-doped colloidal quantum wells : from ultrapure green, tunable dual-emission to white light. Small, 15(38), 1901983-, which has been published in final form at doi:10.1002/smll.201901983. This article may be used for non-commercial purposes in accordance with the Wiley Self-Archiving Policy [https://authorservices.wiley.com/authorresources/Journal-Authors/licensing/self-archiving.html].
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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