High Photovoltaic Quantum Efficiency in Ultrathin van der Waals Heterostructures.
basic_science · Level V
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- Record sourced from PubMed, PMID 28590713.
- Also identified by DOI 10.1021/acsnano.7b03148.
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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 WSe<sub>2</sub>/MoS<sub>2</sub> heterojunctions with vertical carrier collection can have internal photocarrier collection efficiencies exceeding 70%.