Spontaneous-light emitting devices based on microcavity-induced spontaneous emission control
基于微腔诱导自发发射控制的自发发光器件
基本信息
- 批准号:10555018
- 负责人:
- 金额:$ 8.13万
- 依托单位:
- 依托单位国家:日本
- 项目类别:Grant-in-Aid for Scientific Research (B)
- 财政年份:1998
- 资助国家:日本
- 起止时间:1998 至 1999
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
In this project, we studied the spontaneous-light emitting devices, which exhibit the directional radiation with high efficiency and has a capability of very high speed switching, using semiconductor microcavities. Particularly, aiming at the practical application, we focused on the realization of such devices working at room temperature.In the first year (1988), we studied the operation at low temperature in detail in the microcavity light-emitting triode which had been already fabricated. The device has both the functions of current injection and the application of static electric field to the quantum well. Under the constant current injection, we confirmed the continuous change of emission wavelength with the change of the voltage applied to the quantum well, and the change of emission intensity associated with the wavelength-change. The intensity was peaked when the emission wavelength is tuned to the cavity resonance. In addition, the radiation patterns were varied with the change … More of the emission wavelength. From these results, we concluded that the spontaneous emissions were altered by the presence of the microcavity under the control of emission wavelength by the voltage applied to the device. However, the radiation pattern in the device was asymmetric. Through the experiment, we speculated that the reason of the asymmetric radiation is related the local carrier injection due to the difference of resistance between the conducting layers thorough which the p-n junction is biased.In the second year (1999), we re-designed the device. We characterized the new devices at room temperature, and found that the radiation patterns were symmetric. In addition, we confirmed the basic functions of the device, namely the change of radiation pattern and intensity with the change of emission wavelength by the change of the bias voltage applied to the devices, under the injection of carriers by current. Hence, we can conclude that the spontaneous light emitters based on semiconductor microcavities were confirmed to work well at room temperature. Unfortunately, however, the external quantum efficiency was very low, most likely to be due to the poor crystalline quality. Therefore, to apply the devices in practical use, it is necessary to realize higher quality materials in future. Less
在这个项目中,我们研究了自发发光器件,该器件使用半导体微腔表现出高效率的定向辐射,并且具有非常高速的开关能力。特别是针对实际应用,我们重点研究了这种在室温下工作的器件的实现。第一年(1988年),我们在已经制成的微腔发光三极管上详细研究了低温下的工作情况。该器件兼具电流注入和对量子阱施加静电场的功能。在恒定电流注入下,我们证实了发射波长随着施加到量子阱的电压的变化而连续变化,以及发射强度随着波长变化而变化。当发射波长调谐到腔谐振时,强度达到峰值。此外,辐射图随着发射波长的变化而变化。根据这些结果,我们得出结论,在施加到器件的电压控制发射波长的情况下,微腔的存在改变了自发发射。然而,设备中的辐射方向图是不对称的。通过实验,我们推测辐射不对称的原因与p-n结偏置的导电层之间的电阻差异导致的局部载流子注入有关。第二年(1999年),我们重新设计了器件。我们在室温下对新器件进行了表征,发现辐射模式是对称的。此外,我们还确认了器件的基本功能,即在电流注入载流子的情况下,通过改变施加在器件上的偏置电压来改变辐射方向图和强度随发射波长的变化。因此,我们可以得出结论,基于半导体微腔的自发光发射器被证实在室温下工作良好。然而不幸的是,外部量子效率非常低,很可能是由于晶体质量差。因此,为了将这些器件应用于实际,未来有必要实现更高质量的材料。较少的
项目成果
期刊论文数量(6)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Y. Kadoya: "OPTICAL PROPERTIES OF LOW-DIMENSIONAL MATERIALS Vol. 2 by T. Ogawa and Y. Kanemitsu"World Science Publishing Co. Pte. Ltd.. 355-401 (1998)
Y. Kadoya:“低维材料的光学特性第 2 卷,作者:T. Okawa 和 Y. Kanemitsu”World Science Publishing Co. Pte.
- DOI:
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- 影响因子:0
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Y.Kadoya: "OPTICAL PROPERTIES OF LOW-PIMENSIONAL MATERIALS BOL.2(T.Ogawa and Kanemitsu 編,分担執筆)" World Scientific Publishing Co.Pte.Ltd., 355-401 (1998)
Y.Kadoya:“OPTICAL PROPERTIES OF LOW-PIMENSIONAL MATERIALS BOL.2(由 T.Okawa 和 Kanemitsu 编辑,合著者)” World Scientific Publishing Co.Pte.Ltd.,355-401 (1998)
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- 影响因子:0
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S.Yamashita: "Controlled spontaneous emissions from current-driven semiconductor microcavity triodes"Applied Physics Letters. Vol.74,No.9. 1278-1280 (1999)
S.Yamashita:“电流驱动半导体微腔三极管的受控自发发射”应用物理快报。
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- 影响因子:0
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Y.Kadoya: "OPTICAL PROPERTIES OF LOW-DIMENSIONAL MATERIALS VOL.2(T.Ogawa and Y.Kanemitsu編,分担執筆)"World Scientific Publishing Co.Pte.Ltd.. 355-401 (1998)
Y.Kadoya:“低维材料的光学特性 VOL.2(由 T.Okawa 和 Y.Kanemitsu 编辑,合著者)” World Scientific Publishing Co.Pte.Ltd.. 355-401 (1998)
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YAMANISHI Masamichi其他文献
YAMANISHI Masamichi的其他文献
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{{ truncateString('YAMANISHI Masamichi', 18)}}的其他基金
Generation of electrical signals in THz band from coherent charge dipoles in microcavities
从微腔中的相干电荷偶极子生成太赫兹波段的电信号
- 批准号:
12305006 - 财政年份:2000
- 资助金额:
$ 8.13万 - 项目类别:
Grant-in-Aid for Scientific Research (A)
Suppression of current shot noise level in semiconductor multiple junctions
半导体多结中电流散粒噪声水平的抑制
- 批准号:
10650337 - 财政年份:1998
- 资助金额:
$ 8.13万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
Quantum Manipulation of Readiation Field in Semiconductor Microstructures
半导体微结构中读出场的量子操纵
- 批准号:
06245103 - 财政年份:1994
- 资助金额:
$ 8.13万 - 项目类别:
Grant-in-Aid for Scientific Research on Priority Areas