Ultrahigh green and red optical gain cross sections from solutions of colloidal quantum well heterostructures

• Main Authors: Delikanli, Savas, Erdem, Onur, Isik, Furkan, Dehghanpour Baruj, Hamed, Shabani, Farzan, Yagci, Huseyin Bilge, Durmusoglu, Emek Goksu, Demir, Hilmi Volkan
• Other Authors: School of Electrical and Electronic Engineering
• Format: Article
• Language: English
• Published: 2021
• Subjects: Science::Chemistry; Crystals; Quantum Dots
• Online Access: https://hdl.handle.net/10356/147032
• Institution: Nanyang Technological University

We demonstrate amplified spontaneous emission (ASE) in solution with ultralow thresholds of 30 μJ/cm2 in red and of 44 μJ/cm2 in green from engineered colloidal quantum well (CQW) heterostructures. For this purpose, CdSe/CdS core/crown CQWs, designed to hit the green region, and CdSe/CdS@CdxZn1–xS c...