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Electron-doping-enhanced trion formation in monolayer molybdenum disulfide functionalized with cesium carbonate

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Electron-doping-enhanced trion formation in monolayer molybdenum disulfide functionalized with cesium carbonate
นักวิจัย : Lin, Jia Dan , Han, Cheng , Wang, Fei , Wang, Rui , Xiang, Du , Qin, Shiqiao , Zhang, Xue-Ao , Wang, Li , Zhang, Hua , Wee, Andrew Thye Shen , Chen, Wei
คำค้น : DRNTU::Engineering::Materials::Nanostructured materials
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2557
อ้างอิง : Lin, J. D., Han, C., Wang, F., Wang, R., Xiang, D., Qin, S., et al. (2014). Electron-doping-enhanced trion formation in monolayer molybdenum disulfide functionalized with cesium carbonate. ACS Nano, 8(5), 5323-5329. , 1936-0851 , http://hdl.handle.net/10220/24468 , http://dx.doi.org/10.1021/nn501580c
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : ACS Nano
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

We report effective and stable electron doping of monolayer molybdenum disulfide (MoS2) by cesium carbonate (Cs2CO3) surface functionalization. The electron charge carrier concentration in exfoliated monolayer MoS2 can be increased by about 9 times after Cs2CO3 functionalization. The n-type doping effect was evaluated by in situ transport measurements of MoS2 field-effect transistors (FETs) and further corroborated by in situ ultraviolet photoelectron spectroscopy, X-ray photoelectron spectroscopy, and Raman scattering measurements. The electron doping enhances the formation of negative trions (i.e., a quasiparticle comprising two electrons and one hole) in monolayer MoS2 under light irradiation and significantly reduces the charge recombination of photoexcited electron–hole pairs. This results in large photoluminescence suppression and an obvious photocurrent enhancement in monolayer MoS2 FETs.

บรรณานุกรม :
Lin, Jia Dan , Han, Cheng , Wang, Fei , Wang, Rui , Xiang, Du , Qin, Shiqiao , Zhang, Xue-Ao , Wang, Li , Zhang, Hua , Wee, Andrew Thye Shen , Chen, Wei . (2557). Electron-doping-enhanced trion formation in monolayer molybdenum disulfide functionalized with cesium carbonate.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Lin, Jia Dan , Han, Cheng , Wang, Fei , Wang, Rui , Xiang, Du , Qin, Shiqiao , Zhang, Xue-Ao , Wang, Li , Zhang, Hua , Wee, Andrew Thye Shen , Chen, Wei . 2557. "Electron-doping-enhanced trion formation in monolayer molybdenum disulfide functionalized with cesium carbonate".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Lin, Jia Dan , Han, Cheng , Wang, Fei , Wang, Rui , Xiang, Du , Qin, Shiqiao , Zhang, Xue-Ao , Wang, Li , Zhang, Hua , Wee, Andrew Thye Shen , Chen, Wei . "Electron-doping-enhanced trion formation in monolayer molybdenum disulfide functionalized with cesium carbonate."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2557. Print.
Lin, Jia Dan , Han, Cheng , Wang, Fei , Wang, Rui , Xiang, Du , Qin, Shiqiao , Zhang, Xue-Ao , Wang, Li , Zhang, Hua , Wee, Andrew Thye Shen , Chen, Wei . Electron-doping-enhanced trion formation in monolayer molybdenum disulfide functionalized with cesium carbonate. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2557.