Zhaoyang Lin

University of California, Los Angeles

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Yu Huang

University of California, Los Angeles

Xiangfeng Duan

University of California, Los Angeles

Xidong Duan

Hunan University

Zipeng Zhao

University of California, Los Angeles

Yuan Liu

Hunan University

Enbo Zhu

University of California, Los Angeles

Udayabagya Halim

University of California, Los Angeles

Qiyuan He

City University of Hong Kong

Chih‐Yen Chen

National Tsing Hua University

Chen Wang

Institute of Microelectronics

Cooperative Institutions

University of California, Los Angeles

Chinese Academy of Sciences

Tsinghua University

Hunan University

California NanoSystems Institute

Peking University

Nanjing University

University of Chinese Academy of Sciences

University of Science and Technology of China

Harbin Institute of Technology

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Solution-processable 2D semiconductors for high-performance large-area electronics

Nature (2018)

Zhaoyang Lin Yuan Liu Udayabagya Halim Mengning Ding Yuanyue Liu

Exfoliation joint

Dangling bond

10.1038/s41586-018-0574-4

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Citations (776)

A library of 2D electronic material inks synthesized by liquid-metal-assisted intercalation of crystal powders

Nature Communications (2024)

Shengqi Wang Wenjie Li Junying Xue Jifeng Ge He Qin

Abstract Solution-processable 2D semiconductor inks based on electrochemical molecular intercalation and exfoliation of bulk layered crystals using organic cations has offered an alternative pathway to low-cost fabrication of large-area flexible and wearable electronic devices. However, the growth of large-piece bulk crystals as starting material relies on costly and prolonged high-temperature process, representing a critical roadblock towards practical and large-scale applications. Here we report a general liquid-metal-assisted approach that enables the electrochemical molecular intercalation of low-cost and readily available crystal powders. The resulted solution-processable MoS 2 nanosheets are of comparable quality to those exfoliated from bulk crystals. Furthermore, this method can create a rich library of functional 2D electronic inks ( >50 types), including 2D wide-bandgap semiconductors of low electrical conductivity. Lastly, we demonstrated the all-solution-processable integration of 2D semiconductors with 2D conductors and 2D dielectrics for the fabrication of large-area thin-film transistors and memristors at a greatly reduced cost.

Exfoliation joint

Crystal (programming language)

10.1038/s41467-024-50697-z

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General synthesis of two-dimensional van der Waals heterostructure arrays

Nature (2020)

Jia Li Yang Xiang-Dong Yang Liu Bolong Huang Ruixia Wu

Tungsten diselenide

10.1038/s41586-020-2098-y

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Citations (488)

Scalable solution-phase epitaxial growth of symmetry-mismatched heterostructures on two-dimensional crystal soft template

Science Advances (2016)

Zhaoyang Lin Anxiang Yin Jun Mao Yi Xia Nicholas Kempf

Lin et al. report 2D layered materials as a soft template for symmetry-mismatched epitaxial growth of PbSe/Bi 2 Se 3 heterostructures.

Crystal (programming language)

10.1126/sciadv.1600993

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Citations (60)

High-performance transition metal–doped Pt ₃ Ni octahedra for oxygen reduction reaction

Science (2015)

Xiaoqing Huang Zipeng Zhao Liang Cao Yu Chen Enbo Zhu

Bimetallic platinum-nickel (Pt-Ni) nanostructures represent an emerging class of electrocatalysts for oxygen reduction reaction (ORR) in fuel cells, but practical applications have been limited by catalytic activity and durability. We surface-doped Pt3Ni octahedra supported on carbon with transition metals, termed M-Pt3Ni/C, where M is vanadium, chromium, manganese, iron, cobalt, molybdenum (Mo), tungsten, or rhenium. The Mo-Pt3Ni/C showed the best ORR performance, with a specific activity of 10.3 mA/cm(2) and mass activity of 6.98 A/mg(Pt), which are 81- and 73-fold enhancements compared with the commercial Pt/C catalyst (0.127 mA/cm(2) and 0.096 A/mg(Pt)). Theoretical calculations suggest that Mo prefers subsurface positions near the particle edges in vacuum and surface vertex/edge sites in oxidizing conditions, where it enhances both the performance and the stability of the Pt3Ni catalyst.

Bimetallic strip

Oxidizing agent

10.1126/science.aaa8765

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Citations (1,743)

Author Correction: A library of 2D electronic material inks synthesized by liquid-metal-assisted intercalation of crystal powders

Nature Communications (2024)

Shengqi Wang Wenjie Li Junying Xue Jifeng Ge Jing He

Crystal (programming language)

10.1038/s41467-024-53248-8

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Building two-dimensional materials one row at a time: Avoiding the nucleation barrier

Science (2018)

Jiajun Chen Enbo Zhu Juan Liu Shuai Zhang Zhaoyang Lin

No barriers to growing a row Classical nucleation theory predicts that two-dimensional islands on a surface must reach a critical size before they continue to grow; below that size, they dissolve. Chen et al. used phage display to select for short peptides that would bind to molybdenum disulfide (MoS 2 ) (see the Perspective by Kahr and Ward). Hexagonal arrays of these peptides grew epitaxially as dimers but without a size barrier—the critical nuclei size was zero. Although two-dimensional arrays formed, growth occurred one row at time. Classical nucleation theory indeed predicts the absence of a barrier for such one-dimensional growth. Science , this issue p. 1135 ; see also p. 1111

Molybdenum disulfide

Activation barrier

10.1126/science.aau4146

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Citations (176)

Ultrafine jagged platinum nanowires enable ultrahigh mass activity for the oxygen reduction reaction

Science (2016)

Mufan Li Zipeng Zhao Tao Cheng Alessandro Fortunelli Chih‐Yen Chen

Improving the platinum (Pt) mass activity for the oxygen reduction reaction (ORR) requires optimization of both the specific activity and the electrochemically active surface area (ECSA). We found that solution-synthesized Pt/NiO core/shell nanowires can be converted into PtNi alloy nanowires through a thermal annealing process and then transformed into jagged Pt nanowires via electrochemical dealloying. The jagged nanowires exhibit an ECSA of 118 square meters per gram of Pt and a specific activity of 11.5 milliamperes per square centimeter for ORR (at 0.9 volts versus reversible hydrogen electrode), yielding a mass activity of 13.6 amperes per milligram of Pt, nearly double previously reported best values. Reactive molecular dynamics simulations suggest that highly stressed, undercoordinated rhombus-rich surface configurations of the jagged nanowires enhance ORR activity versus more relaxed surfaces.

Non-blocking I/O

10.1126/science.aaf9050

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Citations (1,415)

Monolayer atomic crystal molecular superlattices

Nature (2018)

Chen Wang Qiyuan He Udayabagya Halim Yuanyue Liu Enbo Zhu

Phosphorene

Molybdenum disulfide

Exfoliation joint

10.1038/nature25774

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