title: Wet-Chemically Synthesized Colloidal Semiconductor Nanostructures as Optical Gain Media.
abstract: An overview on the development of wet-chemically synthesized semiconductor nanostructures as optical gain materials is presented in this Review, beginning with the first demonstration of amplified spontaneous emission in zero-dimensional quantum dots and evolving to more sophisticated heterostructures such as one-dimensional core-seeded nanorods, branched core-seeded tetrapods and two-dimensional nanoplatelets. The advantages and challenges of utilizing strongly quantum-confined colloidal semiconductor materials as gain media are discussed, and a concerted effort is made to elaborate on how the progression towards more structurally complex architectures has allowed for dramatic improvements in performance and stability over the archetypal quantum dot.
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
authors.forename: Xuanwei
authors.initials: X
authors.lastname: Ong
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
authors.forename: Min
authors.initials: M
authors.lastname: Zhi
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore.
authors.forename: Shashank
authors.initials: S
authors.lastname: Gupta
authors.affiliation: Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore, 117543, Singapore. chmchany@nus.edu.sg.|Institute of Materials Research and Engineering A*STAR, 3 Research Link, Singapore, 117602, Singapore. chmchany@nus.edu.sg.
authors.forename: Yinthai
authors.initials: Y
authors.lastname: Chan
keywords: amplified spontaneous emission; lasers; nanoparticles; nonlinear optics; semiconductors