The DOI matches its Crossref record; 58 of the 58 references it cites were found in a registry or an index.
Near-Direct Bandgap WSe2/ReS2 Type-II pn Heterojunction for Enhanced Ultrafast Photodetection and High-Performance Photovoltaics
Open accessAbstract
Pn heterojunctions comprising layered van der Waals (vdW) semiconductors have been used to demonstrate current-rectifiers, photodetectors, and photovoltaic devices. However, a direct or near-direct heterointerface bandgap for enhanced photogeneration in high light-absorbing few-layer vdW materials remains unexplored. In this work, for the first time, density functional theory calculations show that the heterointerface of few-layer group-6 transition metal dichalcogenide (TMD) WSe 2 with group-7 ReS 2 results in a sizable (0.7 eV) near-direct type-II bandgap. The interlayer IR bandgap is confirmed through IR photodetection, and microphotoluminescence measurements demonstrate type-II alignment. Few-layer flakes exhibit ultrafast response time (5 μs), high responsivity (3 A/W), and large photocurrent-generation and responsivity-enhancement at the hetero-overlap region (10–100×). Large open-circuit voltage of 0.64 V and short-circuit current of 2.6 μA enable high output electrical power. Finally, long-term air-stability and facile single contact metal fabrication process make the multifunctional few-layer WSe 2 /ReS 2 heterostructure diode technologically promising for next-generation optoelectronics.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cites
Generalized Gradient Approximation Made Simple
Perdew, J. P., Burke, K., & Ernzerhof, M. (1996) · Physical Review Letters · doi:10.1103/physrevlett.77.3865 · Cited by 215,824
Semiempirical GGA‐type density functional constructed with a long‐range dispersion correction
Grimme, S. (2006) · Journal of Computational Chemistry · doi:10.1002/jcc.20495 · Cited by 31,038
Van der Waals heterostructures
Geim, A. K., & Grigorieva, I. V. (2013) · Nature · doi:10.1038/nature12385 · Cited by 10,875
The chemistry of two-dimensional layered transition metal dichalcogenide nanosheets
Chhowalla, M., Shin, H. S., Eda, G., Li, L.-J., Loh, K. P., & Zhang, H. (2013) · Nature Chemistry · doi:10.1038/nchem.1589 · Cited by 10,034
Photodetectors based on graphene, other two-dimensional materials and hybrid systems
Koppens, F. H. L., Mueller, T., Avouris, P., Ferrari, A. C., Vitiello, M. S., & Polini, M. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.215 · Cited by 3,828
Atomically thin p–n junctions with van der Waals heterointerfaces
Lee, C.-H., Lee, G.-H., van der Zande, A. M., Chen, W., Li, Y., Han, M., Cui, X., Arefe, G., Nuckolls, C., Heinz, T. F., et al. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.150 · Cited by 2,303
Ultrafast charge transfer in atomically thin MoS2/WS2 heterostructures
Hong, X., Kim, J., Shi, S.-F., Zhang, Y., Jin, C., Sun, Y., Tongay, S., Wu, J., Zhang, Y., & Wang, F. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.167 · Cited by 2,301
Two-dimensional flexible nanoelectronics
Akinwande, D., Petrone, N., & Hone, J. (2014) · Nature Communications · doi:10.1038/ncomms6678 · Cited by 1,910
Optoelectronic devices based on electrically tunable p–n diodes in a monolayer dichalcogenide
Baugher, B. W. H., Churchill, H. O. H., Yang, Y., & Jarillo-Herrero, P. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.25 · Cited by 1,523
Graphene Plasmonics for Terahertz to Mid-Infrared Applications
Low, T., & Avouris, P. (2014) · ACS Nano · doi:10.1021/nn406627u · Cited by 1,480
Cited by
Two-Dimensional Field-Effect Transistor Sensors: The Road toward Commercialization
Dai, C., Liu, Y., & Wei, D. (2022) · Chemical Reviews · doi:10.1021/acs.chemrev.1c00924 · Cited by 303
Gherabli, R., Indukuri, S. R. K. C., Zektzer, R., Frydendahl, C., & Levy, U. (2023) · Light: Science & Applications · doi:10.1038/s41377-023-01088-4 · Cited by 82
Metadata
- Authors
- Varghese, A., Saha, D., Thakar, K., Jindal, V., Ghosh, S., Medhekar, N. V., Ghosh, S., & Lodha, S.
- Venue
- Nano Letters
- Publisher
- American Chemical Society (ACS)
- Published
- 2020-02-20
- Volume
- 20
- Issue
- 3
- Pages
- 1707-1717
- ISSN
- 1530-6984 (ISSN-L)
- 1530-6992
- OpenAlex
- W3007474645
- Cited by
- 266
- References
- 58
- FWCI
- 14.17
- Type
- journal article
- Language
- en
- Open access
- green
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Near-Direct Bandgap WSe2/ReS2 Type-II pn Heterojunction for Enhanced Ultrafast Photodetection and High-Performance Photovoltaics. https://app.cochat.ai/papers/10.1021/acs.nanolett.9b04879
- The paper
- Varghese, A., Saha, D., Thakar, K., Jindal, V., Ghosh, S., Medhekar, N. V., Ghosh, S., & Lodha, S. (2020). Near-Direct Bandgap WSe2/ReS2 Type-II pn Heterojunction for Enhanced Ultrafast Photodetection and High-Performance Photovoltaics. Nano Letters. https://doi.org/10.1021/acs.nanolett.9b04879
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
