scholarly journals A light emitter based on practicable and mass-producible polycrystalline graphene patterned directly on silicon substrates from a solid-state carbon source

RSC Advances ◽  
2019 ◽  
Vol 9 (65) ◽  
pp. 37906-37910
Author(s):  
Kenta Nakagawa ◽  
Hidenori Takahashi ◽  
Yui Shimura ◽  
Hideyuki Maki
Keyword(s):  
Solid State ◽  
Carbon Source ◽  
Silicon Substrates ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
High Crystallinity ◽  
Size And Shape ◽  
Direct Patterning ◽  
Light Emitter ◽  
Arbitrary Position

We developed a procedure for direct patterning graphene with arbitrary position, size, and shape on Si from a solid-state carbon source without dry etching. Our light emitting devices perform on a par with those based on high crystallinity graphene.

Photoluminescence Properties of Ca3Si2O7: Pr3+ Orange-Red Phosphors Prepared by High-Temperature Solid-State Method

2018 ◽  
Vol 73 (6) ◽  
pp. 555-558 ◽  
Author(s):  
Zhi-Qing Peng ◽  
Rong Chen ◽  
Wen-Lin Feng
Keyword(s):  
Crystal Structure ◽  
High Temperature ◽  
Solid State ◽  
Solid State Method ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Red Phosphors ◽  
Typical Sample ◽  
State Method ◽  
Xrd Patterns

AbstractNovel luminescent materials Ca3-xSi2O7: xPr3+ were successfully prepared by the high-temperature solid-state method. The crystal structure, morphology, and optical spectrum were characterised by X-ray diffraction (XRD), scanning electron microscopy (SEM), and spectroscopy, respectively. The XRD patterns of the samples indicate that the crystal structure is monoclinic symmetry. The SEM shows that the selected sample has good crystallinity although its appearance is irregular and scalelike. The peak of the excitation spectrum of the sample is located at around 449 nm, corresponding to 3H4→3P2 transition of Pr3+. The peak of the emission spectrum of the sample is situated at around 612 nm which is attributed to 3P0→3H6 transition of Pr3+, and the colour is orange-red. The optimum concentration for Pr3+ replaced Ca2+ sites in Ca3Si2O7: Pr3+ is 0.75 mol%. The lifetime (8.48 μs) of a typical sample (Ca2.9925Pr0.0075)Si2O7 is obtained. It reveals that orange-red phosphors Ca3-xSi2O7: xPr3+ possess remarkable optical properties and can be used in white light emitting devices.

Solid state thiazole-based fluorophores: Promising materials for white organic light emitting devices

2021 ◽  
Vol 187 ◽  
pp. 109077
Author(s):  
Kumar Godugu ◽  
Sultana Shaik ◽  
Mohammad Khaja Mohinuddin Pinjari ◽  
Trivikram Reddy Gundala ◽  
Dwaraka Viswanath Chellappa Subramanyam ◽  
...  
Keyword(s):  
Solid State ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

White Polymer Light-Emitting Devices for Solid-State Lighting: Materials, Devices, and Recent Progress

2014 ◽  
Vol 26 (16) ◽  
pp. 2459-2473 ◽  
Author(s):  
Lei Ying ◽  
Cheuk-Lam Ho ◽  
Hongbin Wu ◽  
Yong Cao ◽  
Wai-Yeung Wong
Keyword(s):  
Solid State ◽  
Recent Progress ◽  
Solid State Lighting ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Polymer Light Emitting Devices

Solid-state thiolate-stabilized copper nanoclusters with ultrahigh photoluminescence quantum yield for white light-emitting devices

Nanoscale ◽  
2020 ◽  
Vol 12 (29) ◽  
pp. 15791-15799 ◽  
Author(s):  
Hao-Hua Deng ◽  
Qiong-Qiong Zhuang ◽  
Kai-Yuan Huang ◽  
Paramasivam Balasubramanian ◽  
Zhen Lin ◽  
...  
Keyword(s):  
Solid State ◽  
Quantum Yield ◽  
White Light ◽  
Copper Nanoclusters ◽  
Light Emitting ◽  
Aggregation Induced Emission ◽  
Emission Properties ◽  
Light Emitting Devices ◽  
Photoluminescence Quantum Yield

White-light-emitting devices are successfully fabricated by using solid-state copper nanoclusters as the sole phosphors with aggregation-induced emission properties.

Silicate conductive filament assisted broadband light emission of HfO2 high-k solid state incandescent devices

2018 ◽  
Vol 6 (29) ◽  
pp. 7913-7919 ◽  
Author(s):  
Yiwei Liu ◽  
Gang Niu ◽  
Can Yang ◽  
Shengli Wu ◽  
Liyan Dai ◽  
...  
Keyword(s):  
Solid State ◽  
Light Emission ◽  
Conductive Filament ◽  
Promising Candidate ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
High K

High-k material based solid state incandescent devices (SSI-LEDs) have attracted intense attention as a promising candidate for future broadband light emitting devices.

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