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arXiv · 1706.02700

High Photovoltaic Quantum Efficiency in Ultrathin van der Waals Heterostructures

Joeson Wong·Deep Jariwala·Giulia Tagliabue·Kevin Tat·Artur R. Davoyan·Michelle C. Sherrott·Harry A. Atwater
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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 WSe2/MoS2 heterojunctions with vertical carrier collection can have internal photocarrier collection efficiencies exceeding 70%.

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Joeson Wong, Deep Jariwala, Giulia Tagliabue, Kevin Tat, Artur R. Davoyan, Michelle C. Sherrott, Harry A. Atwater. 2017-06-08. High Photovoltaic Quantum Efficiency in Ultrathin van der Waals Heterostructures. https://doi.org/10.1021/acsnano.7b03148

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