【摘 要】
：
Broadband excited near-infrared (NIR) to visible up-conversion (UC)provides a new approach to entirely harvest NIR solar energy to apply in solar cells [1-3].This is a simulated experiment of broadban
【机 构】
：
State Key Laboratory of Luminescent Materials and Devices, and Institute of Optical Communication Ma
【出 处】
：
第七届中国功能玻璃学术研讨会暨新型光电子材料国际论坛
论文部分内容阅读
Broadband excited near-infrared (NIR) to visible up-conversion (UC)provides a new approach to entirely harvest NIR solar energy to apply in solar cells [1-3].This is a simulated experiment of broadband excitation in principle.It is found that the visible UC emission intensity is enhanced 2-22 folds upon simultaneous two-wavelength (808 nm + 980 nm) excitation mainly due to synergetic UC mechanism of rare-earth (RE) ions.The results are discussed by using energy cascade diagrams of Er3+ and dependence on irradiation power.The demonstrated results indicate that efficient broadband excited UC process based on RE ions possess the potential for enhancement of the power conversion efficiency (PCE) for next generation solar cells.
其他文献
本文论述了目前电镀厂房技术改造实践中常采用的清洁生产技术,并用大量实践数据和实验数据进行了分析论证,可作为电镀厂房技术改造的参考.
系统研究了还原剂、络合剂、加速剂及缓冲剂浓度、镀液温度及其初始pH值对电站锅炉省煤器典型用材化学镀Ni-P施镀效果的影响,探明了镀覆速率、镀层硬度及其腐蚀防护性能随工艺条件的变化规律.
对氯化钾镀锌生产中几个易被忽视的问题进行了探讨,从中可以看出,有些措施是相互矛盾的.如提高pH值可提高浊点,但有时则降低镀液的分散能力;添加光亮剂改善低电流密度区亮度,但易引起镀层防护能力的降低等.因此,应根据生产要求,产品性能的要万锄口以调节控制.
总结了碱性锌镍合金工艺参数对镀层的影响及镀液的稳定性因素,提出了解决方法和预防措施,展现了锌镍合金工艺的发展前景.
以波纹波长、波纹波幅作为波纹纱结构特征的衡量指标,运用二次回归正交设计,研究花式捻线机在不同工艺参数条件下的波纹纱结构变化规律,建立了花式捻线机工艺参数与波纹纱结构的关系模型,提高花式线设计水平,为优化波纹纱生产工艺提供基础条件.
Lanthanide ions (Ln3+)-activated nanomaterials have been intensively explored as nanothermometers (NTMs) that can be used as optical thermal probes in various fields.[1] For instance, Ln3+ doped upcon
Luminescent adjustable quantum dot (QD)-solid nanocomposites have drawn great attention to telecommunication, microelectronics and optical devices, but fabricating and tailoring the luminescence of su
采用熔融法制备了Tb3+掺杂的Bi2O3-B2O3系统玻璃,研究Bi离子含量对玻璃发光性能的影响。研究结果表明：Tb3+掺杂的Bi2O3-B2O3玻璃由[BO3]、[BiO3]、[BO4]、及[BiO6]共同组成,且随着Bi2O3含量由25mol％增加到65mol％时,玻璃的变得结构疏松。当Bi2O3的含量大于等于45mol％时,出现Bi2+的571nm特征发射峰,说明部分Bi3+转化为Bi2+,
As we know, germanate glass fibers are promising medium to obtain 2 μm laser outputs, while all 2μm pulsed laser outputs generated from germanate glass fibers are active Q-switched which requires addi
White light-emitting diodes (W-LEDs) have attracted persistent attention in recent decades due to their magnificent advantages [1].During the development of W-LEDs, one of the major concern problems i