Work

High Photovoltaic Quantum Efficiency in Ultrathin van der Waals Heterostructures

Year: 2017

Type: article

Abstract: We report experimental measurements for ultrathin (<15 nm) van der Waals heterostructures exhibiting external quantum efficiencies exceeding 50% and show that these structures can achieve experimental absorbance >90%. By coupling electromagnetic simulations and experimental measurements, we show that pn WSe 2 /MoS 2 heterojunctions with vertical carrier collection can have internal photocarrier collection efficiencies exceeding 70%.

Source: ACS Nano

DOI: 10.1021/acsnano.7b03148

Authors: Joeson Wong, Deep Jariwala, Giulia Tagliabue, Kevin Tat, Artur R. Davoyan, Michelle C. Sherrott, Harry A. Atwater

Institutions: California Institute of Technology, Joint Center for Artificial Photosynthesis, Resnick Sustainability Institute, Kavli Nanoscience Institute

Language: English

Topic: 2D Materials and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

Funders: National Science Foundation, U.S. Department of Energy, Northrop Grumman, California Institute of Technology, Resnick Sustainability Institute for Science, Energy and Sustainability, California Institute of Technology, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Office of Science, Division of Graduate Education, Basic Energy Sciences

Awards: G2627142793, Investigation of Hot Carriers Generation from Surface Plasmon Decay, NEW; LIGHT-MATERIAL INTERACTIONS IN ENERGY CONVERSION -- EFRC; PI - HARRY ATWATER

OpenAlex ID: W2623566146

FWCI: 10.39

Cites: 50

Cited by: 239

Related to: 10