Publications

@article{Li2017,

title = {Synthesis of 2D Layered BiI_{3}Nanoplates, BiI_{3}/WSe_{2}van der Waals Heterostructures and Their Electronic, Optoelectronic Properties},

author = {Jia Li and Xun Guan and Chen Wang and Hung‐Chieh Cheng and Ruoqi Ai and Kangkang Yao and Peng Chen and Zhengwei Zhang and Xidong Duan and Xiangfeng Duan},

doi = {10.1002/smll.201701034},

issn = {1613-6829},

year  = {2017},

date = {2017-10-00},

urldate = {2017-10-00},

journal = {Small},

volume = {13},

number = {38},

publisher = {Wiley},

abstract = {<jats:p>Two–dimensional layered materials (2DLMs) have attracted considerable recent interest as a new material platform for fundamental materials science and potential new technologies. Here we report the growth of layered metal halide materials and their optoelectronic properties. BiI<jats:sub>3</jats:sub>nanoplates can be readily grown on SiO<jats:sub>2</jats:sub>/Si substrates with a hexagonal geometry, with a thickness in the range of 10–120 nm and a lateral dimension of 3–10 µm. Transmission electron microscopy and electron diffraction studies demonstrate that the individual nanoplates are high quality single crystals. Micro‐Raman studies show characteristic<jats:italic>A</jats:italic><jats:sub>g</jats:sub>band at ≈115 cm<jats:sup>−1</jats:sup>with slight red‐shift with decreasing thickness, and micro‐photoluminescence studies show uniform emission around 690 nm with blue‐shift with decreasing thickness. Electrical transport studies of individual nanoplates show n‐type semiconductor characteristics with clear photoresponse. Further, the BiI<jats:sub>3</jats:sub>can be readily grown on other 2DLMs (e.g., WSe<jats:sub>2</jats:sub>) to form van der Waals heterostructures. Electrical transport measurements of BiI<jats:sub>3</jats:sub>/WSe<jats:sub>2</jats:sub>vertical heterojunctions demonstrate p–n diode characteristics with gate‐tunable rectification behavior and distinct photovoltaic effect. The synthesis of the BiI<jats:sub>3</jats:sub>nanoplates can expand the library of 2DLMs and enable a wider range of van der Waals heterostructures.</jats:p>},

keywords = {Materials},

pubstate = {published},

tppubtype = {article}

}

@article{Wang2016,

title = {Chemical vapor deposition growth of single-crystalline cesium lead halide microplatelets and heterostructures for optoelectronic applications},

author = {Yiliu Wang and Xun Guan and Dehui Li and Hung-Chieh Cheng and Xidong Duan and Zhaoyang Lin and Xiangfeng Duan},

doi = {10.1007/s12274-016-1317-1},

issn = {1998-0000},

year  = {2017},

date = {2017-04-00},

urldate = {2017-04-00},

journal = {Nano Res.},

volume = {10},

number = {4},

pages = {1223--1233},

publisher = {Tsinghua University Press},

keywords = {Materials},

pubstate = {published},

tppubtype = {article}

}

@article{doi:10.1021/acsnano.7b01507,

title = {Growth of Single-Crystalline Cadmium Iodide Nanoplates, CdI2/MoS2 (WS2, WSe2) van der Waals Heterostructures, and Patterned Arrays},

author = {Ruoqi Ai and Xun Guan and Jia Li and Kangkang Yao and Peng Chen and Zhengwei Zhang and Xidong Duan and Xiangfeng Duan},

url = {https://doi.org/10.1021/acsnano.7b01507},

doi = {10.1021/acsnano.7b01507},

year  = {2017},

date = {2017-01-01},

urldate = {2017-01-01},

journal = {ACS Nano},

volume = {11},

number = {3},

pages = {3413-3419},

note = {PMID: 28303713},

keywords = {Materials},

pubstate = {published},

tppubtype = {article}

}