Quantum dot lasing from a waterproof and stretchable polymer film

作     者：Mohammad Mohammadimasoudi Pieter Geiregat Frederik Van Acker Jeroen Beeckman Zeger Hens Tangi Aubert Kristiaan Neyts Mohammad Mohammadimasoudi;Pieter Geiregat;Frederik Van Acker;Jeroen Beeckman;Zeger Hens;Tangi Aubert;Kristiaan Neyts

作者机构：Nano-Bio-Photonics LabFaculty of New Sciences and TechnologiesUniversity of TehranTehranIran Liquid Crystals and Photonics GroupELIS DepartmentGhent UniversityTechnologiepark-Zwijnaarde 1269052 ZwijnaardeBelgium Physics and Chemistry of NanostructuresDepartment of ChemistryGhent UniversityGhentBelgium Center for Nano-and Biophotonics(NB-Photonics)Ghent UniversityTechnologiepark-Zwijnaarde 1269052 ZwijnaardeBelgium 

出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)

年 卷 期：2022年第11卷第10期

页      面：2435-2443页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

主　　题：lasing film polymer 

摘      要：Colloidal quantum dots(QDs)are excellent optical gain materials that combine high material gain,a strong absorption of pump light,stability under strong light exposure and a suitability for solution-based *** integration of QDs in laser cavities that fully exploit the potential of these emerging optical materials remains,however,a *** this work,we report on a vertical cavity surface emitting laser,which consists of a thin film of QDs embedded between two layers of polymerized chiral liquid *** directed,circularly polarized defect mode lasing under nanosecond-pulsed excitation is demonstrated within the photonic band gap of the chiral liquid *** and long-term narrow-linewidth lasing of an exfoliated free-standing,flexible film under water is obtained at room ***,we show that the lasing wavelength of this flexible cavity shifts under influence of pressure,strain or *** such,the combination of solution processable and stable inorganic QDs with high chiral liquid crystal reflectivity and effective polymer encapsulation leads to a flexible device with long operational lifetime,that can be immersed in different protic solvents to act as a sensor.