Postdoc position available in PENG lab!

Ultrafast and highly-sensitive infrared photodetectors based on two-dimensional oxyselenide crystals

The Peng research group and collaborators have demonstrated high-performing flexible infrared photodetectors based on an air-stable 2D oxyselenide crystals at room temperature. 2D Bi2O2Se devices demonstrate a very high sensitivity of 65 A/W at 1200 nm and an ultrafast photoresponse ~1ps, implying an ultrahigh material-limited photodetection bandwidth up to 500 GHz. (Jianbo Yin, et al. Ultrafast and highly sensitive infrared photodetectors based on two-dimensional oxyselenide crystals.Nature Communications 2018, in press.) Read more. See Report #1 #2 #3

2D semiconducting Bi2O2Se with ultrahigh mobility

The Peng research group realized the controlled syntheses of high-mobility semiconducting 2D crystals--- layered bismuth oxychalcogenides (BOX, Bi2O2X: X = S, Se, Te), and are vigorously exploring their vistas in electronics and optoelectronics. (Jinxiong Wu, et al. High electron mobility and quantum oscillations in non-encapsulated ultrathin semiconducting Bi2O2Se. Nature Nanotechnology 2017, 12, 530) Read more

Ultrafast Growth of Large Single-crystal Graphene

The Peng research group has several innovative contributions to the ultrafast growth of large-area graphene single crystals in a controlled manner and achieved its growth rate with world record (Nature Nanotech. 2016; Adv. Mater. 2017; ACS Nano 2016). Read more

4-inch wrinkle-free single-crystal graphene wafer

The Peng research group has successfully grown wrinkle-free single-crystal graphene wafer on a 4-inch-sized twin-boundary-free single-crystal Cu(111)/sapphire substrate through interfacial strain engineering (ACS Nano 2017; Small 2018). Read more

Roll-to-roll CVD mass production of graphene film

The Peng research group has achieved the mass production of graphene film via continuous roll-to-roll chemical vapor deposition and non-destructive lamination transfer process (Nano Lett. 2015; Adv. Mater. 2015; Adv. Mater. 2018). Read more

Selectively enhanced photocurrent generation in twisted bilayer graphene with van Hove singularity

The Peng research group has demonstrated that twisted bilayer graphene (tBLG) with twist-angle dependent van Hove singularities exhibits strong and peculiar light-matter interactions and selectively enhanced photocurrent generation (Nature Commun. 2016; ACS Nano 2016; Nano Lett. 2015). Read more

The unique structure and properties of two-dimensional (2D) materials have a large impact on fundamental researches as well as applications covering electronics, photonics, optoelectronics and energy science. The Peng research group is interested in nanomaterials science and engineering towards the better performance of nanoelectronics, quantum devices, photodetectors, and batteries. Currently, our research interests are focused on the controlled growth, chemical modifications, heterostructures and functional devices of high-mobility 2D materials, such as graphene, topological insulator, layered chalcogenides and oxychalcogenides.


News

  • 2018 group annual summary seminar was held successfully!

    January 26, 2019

  • We are happy to have Dr. Shipu Xu join the Peng lab! Shipu obtained his Ph.D. in Physics at Ilmenau University of Technology, Germany and was awarded BoYa postdoc fellowship at PKU.

    January 01, 2019

  • Our Invited review paper “Bridging the Gap between Reality and Ideal in Chemical Vapor Deposition Growth of Graphene” has been accpeted for publication in Chemical Review. This is the first Chemical Review paper on the CVD of graphene.

    September 05, 2018

  • Prof. Binghai Yan (Department of Condensed Matter Physics, Weizmann Institute of Science, Israel) visited our group and had a detailed discussion on 2D BOX.

    August 01, 2018

  • Our research work “Electronic Structures and Unusually Robust Bandgap in an Ultrahigh Mobility Layered Oxide Semiconductor, Bi2O2Se” has been accepted for publication in Science Advances.

    July 27, 2018

  • Our paper entitled 'Ultrafast and highly-sensitive infrared photodetectors based on two-dimensional oxyselenide crystals; has been accepted for publication in Nature Communications.

    July 13, 2018

  • Congratulations to Minzhan Wang, Zhenjun Tan, Huaying Ren and Liurong Shi for obtaining the Ph.D. degree.

    July 11, 2018

  • Congratulations to Yichi Zhang for graduating! Yichi will join the CCME of PKU for his five-year PhD program.

    July 10, 2018

  • We are happy to have Dr. Qian Yang join the Peng lab! Qian obtained her Ph.D. at Chongqing University and was awarded BoYa postdoc fellowship at PKU.

    July 10, 2018

  • Prof. Hailin Peng wins the 20th Yisheng Mao Youth Science and Technology Award of Beijing (第二十届茅以升北京青年科技奖).

    July 07, 2018

  • Celebrating the 9th anniversary of the returnee to PKU (since June 29, 2009) after Dr. Peng finished his postdoc scholar program at Stanford.

    June 29, 2018

  • New PENG Lab website design.

    June 13, 2018

  • Prof. Hailin Peng was selected as one of two winners receiving the 2017 Singapore MRS ICON-2DMAT Young Scientist Award.

    December 13, 2017

Selected Publications

  • Li Lin, Hailin Peng*, Zhongfan Liu*. Synthesis challenges for graphene industry. Nature Materials 2019, 9, 520-524.

  • Jianbo Yin#, Zhenjun Tan#, Hao Hong#, Jinxiong Wu#, Hongtao Yuan, Yujing Liu, Cheng Chen, Congwei Tan, Ms. Fengrui Yao, Tianran Li, Yulin Chen, Zhongfan Liu, Kaihui Liu*, Hailin Peng* . Ultrafast and highly-sensitive infrared photodetectors based on two-dimensional oxyselenide crystals. Nature Communications 2018,  9, 3311.(#equally contributed).

  • Jinxiong Wu#, Hongtao Yuan#, Mengmeng Meng, Cheng Chen, Yan Sun, Zhuoyu Chen, Wenhui Dang, Congwei Tan, Yujing Liu, Jianbo Yin, Yubing Zhou, Shaoyun Huang, H. Q. Xu, Yi Cui, Harold Y. Hwang, Zhongfan Liu, Yulin Chen, Binghai Yan, Hailin Peng* . High electron mobility and quantum oscillations in non-encapsulated ultrathin semiconducting Bi2O2Se. Nature Nanotech. 2017, 12, 530–534(#equally contributed).

  • Xiaozhi Xu, Zhihong Zhang, Lu Qiu, Jianing Zhuang, Liang Zhang, Huan Wang, Chongnan Liao, Huading Song, Ruixi Qiao, Peng Gao, Zonghai Hu, Lei Liao, Zhimin Liao, Enge Wang, Dapeng Yu, Feng Ding*, Hailin Peng*, Kaihui Liu*. Ultrafast Growth of Large Single-crystal Graphene Assisted by Continuous Oxygen Supply. Nature Nanotechnology 2016, 11, 930.

  • Wenshan Zheng, Tian Xie, Yu Zhou, Y. L. Chen, Wei Jiang, Shuli Zhao, Jinxiong Wu, Yumei Jing, Yue Wu, Guanchu Chen, Yunfan Guo, Jianbo Yin, Shaoyun Huang, H. Q. Xu, Zhongfan Liu, Hailin Peng*. Patterning two-dimensional chalcogenide crystals of Bi2Se3 and In2Se3 and efficient photodetectors. Nature Communications 2015, 6, 6972.

  • Hailin Peng*, Wenhui Dang, Jie Cao, Yulin Chen, Di Wu, Wenshan Zheng, Hui Li, Zhi-Xun Shen, Zhongfan Liu. Topological insulator nanostructures for near-infrared transparent flexible electrodes. Nature Chemistry 2012, 4, 281–286.

  • Hailin Peng, Keji Lai, Desheng Kong, Stefan Meister, Yulin Chen, Xiao-Liang Qi, Shou-Cheng Zhang, Zhi-Xun Shen, Yi Cui*. Aharonov-Bohm Interference in Topological Insulator Nanoribbons. Nature Materials 2010, 9(3), 225.

  • Hailin Peng, Keji Lai, Desheng Kong, Stefan Meister, Yulin Chen, Xiao-Liang Qi, Shou-Cheng Zhang, Zhi-Xun Shen, Yi Cui*. Aharonov-Bohm Interference in Topological Insulator Nanoribbons. Nature Materials 2010, 9(3), 225.

  • Jianbo Yin, Hailin Peng . Asymmetry allows photocurrent in intrinsic graphene. Nature Nanotech. 2019, 14, 105−106.