The simultaneous modulation of electric and optical properties in graphene is essential for advancing high-performance applications in optoelectronics.However,achieving in-situ control of multiple electric and optical...The simultaneous modulation of electric and optical properties in graphene is essential for advancing high-performance applications in optoelectronics.However,achieving in-situ control of multiple electric and optical states in graphene devices remains a challenge.Here we demonstrate a versatile and reversible electric-field control of organic-ion intercalation from bilayer to pentalayer graphene.Through simultaneous optical imaging and electric measurements,we reveal multiple physical states controlled by the layer-by-layer intercalation processes,resulting in both high transparency and high electric conductance with an increase in the number of intercalated layers.Raman spectroscopy demonstrates that the intercalated graphene maintains a high carrier concentration without lattice degradation.Moreover,Hall effect measurements reveal that the carrier density can reach approximately 1.5×10^(14)cm^(-2)per layer.The ability to synchronously control the transparency and conductance states by adjusting the number of ion-intercalated layers highlights the potential of multistate modulation for the development of advanced optoelectronic devices in two-dimensional materials.展开更多
Xudong Zhang:We all encounter this problem when we read early avant・garde works:Although the reading itself is enjoyable,we still want to figure out the exact meanings of the text.I discussed this question with Su Ton...Xudong Zhang:We all encounter this problem when we read early avant・garde works:Although the reading itself is enjoyable,we still want to figure out the exact meanings of the text.I discussed this question with Su Tong蘇童on our way here,and he agreed that this is true when reading short stories・I will invite him to say a few more words on the subject later.展开更多
基金supported by the National Natural Science Foundation of China(Grant Nos.12274252,and 12350404)the Basic Science Center Project of NSFC(Grant No.52388201)the Innovation Program for Quantum Science and Technology(Grant No.2021ZD0302502)。
文摘The simultaneous modulation of electric and optical properties in graphene is essential for advancing high-performance applications in optoelectronics.However,achieving in-situ control of multiple electric and optical states in graphene devices remains a challenge.Here we demonstrate a versatile and reversible electric-field control of organic-ion intercalation from bilayer to pentalayer graphene.Through simultaneous optical imaging and electric measurements,we reveal multiple physical states controlled by the layer-by-layer intercalation processes,resulting in both high transparency and high electric conductance with an increase in the number of intercalated layers.Raman spectroscopy demonstrates that the intercalated graphene maintains a high carrier concentration without lattice degradation.Moreover,Hall effect measurements reveal that the carrier density can reach approximately 1.5×10^(14)cm^(-2)per layer.The ability to synchronously control the transparency and conductance states by adjusting the number of ion-intercalated layers highlights the potential of multistate modulation for the development of advanced optoelectronic devices in two-dimensional materials.
文摘Xudong Zhang:We all encounter this problem when we read early avant・garde works:Although the reading itself is enjoyable,we still want to figure out the exact meanings of the text.I discussed this question with Su Tong蘇童on our way here,and he agreed that this is true when reading short stories・I will invite him to say a few more words on the subject later.
