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高结晶的二氧化碳纳米片的温度依赖激发性排放特性

Yue Wang¹, Guodi Zhang¹, Min Zhao¹

¹College of Physical Science and Technology, Heilongjiang University, Harbin 150080, People's Republic of China.

|April 11, 2024

概括

高结晶的化碳 (HCCN) 纳米片显示出光电转换的前景. 它们的有序结构降低了刺激子的结合能量,通过影响激发光发光,提高了性能.

科学领域:

材料科学材料科学材料科学
光物理学的光学物理学
纳米技术纳米技术

背景情况:

高结晶的碳化物 (HCCN) 纳米片对光电转换具有前景.
理解激发性光物理过程是优化HCCN性能的关键.
无形聚合物碳化物 (PCN) 作为一个比较材料.

研究的目的:

研究HCCN和PCN的取决于温度的刺激性光发光 (PL).
确定刺激子的结合能量和热激活能量.
在HCCN中确定PL排放的来源.

主要方法:

稳态和时间分辨率光发光 (PL) 谱学.
取决于温度的PL测量.
波长依赖的PL动态分析.

主要成果:

由于其有序的结构,HCCN的激子结合能量 (109.26 meV) 比PCN (207.39 meV) 低.
随着两种材料温度的增加,PL寿命都会下降,这归因于增强的电子-声波合.
在HCCN中确定PL排放转换为*σ*-LP, *π*-*π*和 *π*-LP,其中*π*-LP占主导地位.

结论:

高晶度显著影响HCCN纳米板的激发性排放特性.
HCCN的有序结构有助于提高光电转换潜力.
结果为高级应用提供了对HCCN光物理学的基本见解.

关键词:

碳化物碳化物激发性排放的激发性排放高晶度的结晶性.温度依赖性温度依赖性时间分辨率光谱学.

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