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Novel Red Emission from MoO3/MoS2–MoO2–MoO3 Core–Shell Belt Surface
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-09-27 00:00:00 , DOI: 10.1021/acsami.8b13784 Lei Wang 1 , Xiaohong Ji 1 , Ting Wang 1, 2 , Qinyuan Zhang 1, 2
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-09-27 00:00:00 , DOI: 10.1021/acsami.8b13784 Lei Wang 1 , Xiaohong Ji 1 , Ting Wang 1, 2 , Qinyuan Zhang 1, 2
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Electrically driven red emission from MoS2–MoO2–MoO3 (MS-MO) hybrid-based metal–semiconductor–metal (MSM) devices is reported for the first time. MoO3 belts with high crystal quality and sufficient size are synthesized by thermal deposition. A layer of MS-MO hybrid is then produced on the belt surface to form MoO3/MS-MO core–shell by sulfurization. The devices exhibit unique electrical properties, a nonlinear I–V curve, and electric hysteresis characteristics at high applied biases (>2.4 V), where MS-MO hybrids act as electron transport channels. The electroluminescent current of the device increases to a set current limit over time when a constant bias is applied. The novel characteristics of the device are attributed to the space charge limited conduction (SCLC) mechanism occurring in MS-MO hybrids. The strong light emission is from recombination of excitons within the MoS2 phase. This work develops a simple and effective method to drive MoS2 to emit light on a large scale without using monolayer MoS2 and vertical p–n junctions, indicating great potential for future 2D optoelectronics and photonics applications.
中文翻译：
MoO 3 / MoS 2 –MoO 2 –MoO 3核–壳带表面的新型红色发射
首次报道了基于MoS 2 –MoO 2 –MoO 3（MS-MO）混合金属-半导体-金属（MSM）装置的电驱动红色发射。通过热沉积合成具有高晶体质量和足够尺寸的MoO 3带。然后在皮带表面产生一层MS-MO杂化物，通过硫化形成MoO 3 / MS-MO核壳。该器件具有独特的电气特性，非线性I – VMS-MO杂化物充当电子传输通道的情况下，在高施加偏压（> 2.4 V）时的曲线，电滞后特性。当施加恒定偏置时，器件的电致发光电流会随时间增加到设置的电流极限。该设备的新颖特性归因于MS-MO混合动力系统中发生的空间电荷受限传导（SCLC）机制。强烈的发光来自MoS 2相中激子的复合。这项工作开发出一种简单有效的方法来驱动MoS 2大规模发光，而无需使用单层MoS 2和垂直p-n结，这为将来的2D光电和光子学应用提供了巨大的潜力。
更新日期：2018-09-27
中文翻译：
MoO 3 / MoS 2 –MoO 2 –MoO 3核–壳带表面的新型红色发射
首次报道了基于MoS 2 –MoO 2 –MoO 3（MS-MO）混合金属-半导体-金属（MSM）装置的电驱动红色发射。通过热沉积合成具有高晶体质量和足够尺寸的MoO 3带。然后在皮带表面产生一层MS-MO杂化物，通过硫化形成MoO 3 / MS-MO核壳。该器件具有独特的电气特性，非线性I – VMS-MO杂化物充当电子传输通道的情况下，在高施加偏压（> 2.4 V）时的曲线，电滞后特性。当施加恒定偏置时，器件的电致发光电流会随时间增加到设置的电流极限。该设备的新颖特性归因于MS-MO混合动力系统中发生的空间电荷受限传导（SCLC）机制。强烈的发光来自MoS 2相中激子的复合。这项工作开发出一种简单有效的方法来驱动MoS 2大规模发光，而无需使用单层MoS 2和垂直p-n结，这为将来的2D光电和光子学应用提供了巨大的潜力。
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