User: Guest |  Site Map |  My BSAC Profile
Table of all Projects

BPN822: Monolayer Semiconductor Optoelectronics

Project ID BPN822
Start Date Wed 2016-Jan-27 11:33:29
Last Updated Sun 2018-Jan-28 10:31:32
Abstract In spite of the great promise they hold for a broad range of applications, two-dimensional (2D) transition metal dichalcogenides (TMDCs) have had a significant drawback of poor photoluminescence (PL) quantum yield (QY) at room temperature. Among a number of studies which have suggested the way to improve QY, superacid treatment, one of the most promising strategies, has enhanced the QY of TMDCs to near 100%. However, insufficient treatment yield and instability of enhanced QY have emerged as critical obstacles to this approach towards practical applications in real devices. In this work, we demonstrate the 2D TMDCs with near-perfect optoelectronic properties and high stability against the external environment. By a simple method which consists of superacid treatment and the encapsulation of 2D TMDCs with an amorphous fluoropolymer, our proposed work not only preserves the QY enhancement but also substantially improves the yield of treatment, leading to the uniformly improved QY near 100% at low injection levels. Since we also demonstrate that our encapsulating layer followed by superacid treatment can be patterned by general photolithography and compatible with subsequent fabrication process, our work presents a novel route of being directly applicable for a new class of optoelectronic devices.
Status Continuing
Funding Source Federal
IAB Research Area NanoTechnology: Materials, Processes & Devices
Researcher(s) Hyungjin Kim, Matin Amani, Der-Hsien Lien
Advisor(s) Ali Javey
Detailed Information
Secure Access

Private Abstract
Research Report
Summary Slide PDF | VIDEO
Active Feedback (or Request for Response)


  • Copyright Notification: All papers downloaded from this site are © University of California or the publisher, all rights reserved. Contact the BSAC Webmaster for permission related to copyrighted materials.
  • Links on these pages to commercial sites do not represent endorsements by UC or its affiliates.
  • Privacy Policy
  • Contact Us
  User logged in as: Guest
  User Idle since: June 21, 2018, 1:21 am