Advanced
Advanced

Browsing by Author Nguyen, Duc Trung Kien

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 2 of 2
  • 890.pdf.jpg
  • Article

  • Impact of Parallel Computing on Study of Time Evolution of a Quantum Impurity System in Response to a Quench

    • Authors: Nghiem, Thi Minh Hoa; Dang, The Hung; Luong, Minh Tuan; Duong, Xuan Nui; Nguyen, Duc Trung Kien (2020)

  • In an arbitrary system subjected to a quench or an external field that varies the system parameters, the degrees of freedom increases double in comparison to that of an isolated system. In this study, we consider the quantum impurity system subjected to a quench, and measure the corresponding time-evolution of the spectral function, which is originated from the time-resolved photoemission spectroscopy. Due to the large number of degrees of freedom, the expression of the time-dependent spectral function is twice much more complicated than that of the time-independent spectral function, and therefore the calculation is extremely time consuming. In this paper, we estimate the scale of ti...
  • Synthesis-and-optical-properties-of-red-blue-emitting-Sr2MgSi2O7-Eu3-Eu2-phosphors-for-white-LED_2016_Journal-of-Science-Advanced-Materials-and-Device.pdf.jpg
  • Article

  • Synthesis and optical properties of red/blue-emitting Sr2MgSi2O7:Eu 3 +/Eu 2+ phosphors for white LED

    • Authors: Tong, Thi Hao Tam; Nguyen, Duy Hung; Nguyen, Thi Kim Lien; Nguyen, Duc Trung Kien; Pham, Thanh Huy (2016)

  • Phosphor-converted white light emitting diodes (white LEDs) have received great attention in recent years since they have several excellent features such as high lumen output, low power consumption, long lifetime and environmentally friendly. In this work, we report the co-precipitation synthesis of red/blue Sr2MgSi2O7:Eu 3+ /Eu 2+ phosphors with various Eu doping concentration. The results show that the ob-tained Sr2MgSi2O7:Eu 3+ /Eu 2+ phosphors have good crystallinity and emit strong red (Sr2MgSi2O7:Eu 3+ ) and blue (Sr2MgSi2O7:Eu 2+) emissions under near UV light excitation. The sharp emission peaks at 577, 590, 612, 653, and 701 nm corresponded to the typical 5 D0/7 Fj (j=0,1...

    Readership Map

    ABSTRACTS VIEWS

    45545355

    VIEWS & DOWNLOAD

    27620015

    Content Distribution

Browsing by Author Nguyen, Duc Trung Kien

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 2 of 2
  • 890.pdf.jpg
  • Article

  • Impact of Parallel Computing on Study of Time Evolution of a Quantum Impurity System in Response to a Quench

    • Authors: Nghiem, Thi Minh Hoa; Dang, The Hung; Luong, Minh Tuan; Duong, Xuan Nui; Nguyen, Duc Trung Kien (2020)

  • In an arbitrary system subjected to a quench or an external field that varies the system parameters, the degrees of freedom increases double in comparison to that of an isolated system. In this study, we consider the quantum impurity system subjected to a quench, and measure the corresponding time-evolution of the spectral function, which is originated from the time-resolved photoemission spectroscopy. Due to the large number of degrees of freedom, the expression of the time-dependent spectral function is twice much more complicated than that of the time-independent spectral function, and therefore the calculation is extremely time consuming. In this paper, we estimate the scale of ti...
  • Synthesis-and-optical-properties-of-red-blue-emitting-Sr2MgSi2O7-Eu3-Eu2-phosphors-for-white-LED_2016_Journal-of-Science-Advanced-Materials-and-Device.pdf.jpg
  • Article

  • Synthesis and optical properties of red/blue-emitting Sr2MgSi2O7:Eu 3 +/Eu 2+ phosphors for white LED

    • Authors: Tong, Thi Hao Tam; Nguyen, Duy Hung; Nguyen, Thi Kim Lien; Nguyen, Duc Trung Kien; Pham, Thanh Huy (2016)

  • Phosphor-converted white light emitting diodes (white LEDs) have received great attention in recent years since they have several excellent features such as high lumen output, low power consumption, long lifetime and environmentally friendly. In this work, we report the co-precipitation synthesis of red/blue Sr2MgSi2O7:Eu 3+ /Eu 2+ phosphors with various Eu doping concentration. The results show that the ob-tained Sr2MgSi2O7:Eu 3+ /Eu 2+ phosphors have good crystallinity and emit strong red (Sr2MgSi2O7:Eu 3+ ) and blue (Sr2MgSi2O7:Eu 2+) emissions under near UV light excitation. The sharp emission peaks at 577, 590, 612, 653, and 701 nm corresponded to the typical 5 D0/7 Fj (j=0,1...