Understanding the features in the ultrafast transient absorption spectra of CdSe quantum dots

• Main Authors: Zhang, Cheng, Do, Thanh Nhut, Ong, Xuanwei, Chan, Yinthai, Tan, Howe-Siang
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2017
• Subjects: CdSe quantum dots; Nonlinear optical spectroscopy
• Online Access: https://hdl.handle.net/10356/85126; http://hdl.handle.net/10220/43633
• Institution: Nanyang Technological University

We describe a model to explain the features of the ultrafast transient absorption (TA) spectra of CdSe core type quantum dots (QDs). The measured TA spectrum consists of contributions by the ground state bleach (GSB), stimulated emission (SE) and excited state absorption (ESA) processes associated w...