BIOMAT Database Logo BIOMAT Database Logo

Engineering van der Waals Contacts by Interlayer Dipoles. 2024

Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Department of Physics, Tsinghua University, Beijing 100084, China.

Tuning the interfacial Schottky barrier with van der Waals (vdW) contacts is an important solution for two-dimensional (2D) electronics. Here we report that the interlayer dipoles of 2D vdW superlattices (vdWSLs) can be used to engineer vdW contacts to 2D semiconductors. A bipolar WSe2 with Ba6Ta11S28 (BTS) vdW contact was employed to exhibit this strategy. Strong interlayer dipoles can be formed due to charge transfer between the Ba3TaS5 and TaS2 layers. Mechanical exfoliation breaks the superlattice and produces two distinguished surfaces with TaS2 and Ba3TaS5 terminations. The surfaces thus have opposite surface dipoles and consequently different work functions. Therefore, all the devices fall into two categories in accordance with the rectifying direction, which were verified by electrical measurements and scanning photocurrent microscopy. The growing vdWSL family along with the addition surface dipoles enables prospective vdW contact designs and have practical application in nanoelectronics and nano optoelectronics.

UI MeSH Term Description Entries

Related Publications

Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Van der Waals engineering of magnetism.
December 2019, Nature materials,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Self-Trapped Interlayer Excitons in van der Waals Heterostructures.
April 2022, The journal of physical chemistry letters,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Interlayer excitons in a bulk van der Waals semiconductor.
September 2017, Nature communications,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Interlayer Interactions in 1D Van der Waals Moiré Superlattices.
January 2022, Advanced science (Weinheim, Baden-Wurttemberg, Germany),
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
High-Spin Orbital Interactions Across van der Waals Gaps Controlling the Interlayer Ferromagnetism in van der Waals Ferromagnets.
September 2022, Journal of the American Chemical Society,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Interlayer bond polarizability model for interlayer phonons in van der Waals heterostructures.
February 2024, Nanoscale,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Strain engineering of van der Waals heterostructures.
January 2018, Nanoscale,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Interlayer Trions in the MoS2/WS2 van der Waals Heterostructure.
February 2018, Nano letters,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Chemical Identification of Interlayer Contaminants within van der Waals Heterostructures.
July 2019, ACS applied materials & interfaces,
Zuoping Zhou, and Jun-Fa Lin, and Zimeng Zeng, and Xiaoping Ma, and Liang Liang, and Yuheng Li, and Zhongyuan Zhao, and Zhen Mei, and Huaixin Yang, and Qunqing Li, and Jian Wu, and Shoushan Fan, and Xi Chen, and Tian-Long Xia, and Yang Wei
Anisotropic Interlayer Exciton in GeSe/SnS van der Waals Heterostructure.
February 2021, The journal of physical chemistry letters,
Copied contents to your clipboard!