4.6 Article

Thermoradiative Power Conversion from HgCdTe Photodiodes and Their Current-Voltage Characteristics

期刊

ACS PHOTONICS
卷 9, 期 5, 页码 1535-1540

出版社

AMER CHEMICAL SOC
DOI: 10.1021/acsphotonics.2c00223

关键词

thermoradiative power; thermophotovoltaics; MIR photodiodes; HgCdTe photodiodes

资金

  1. UNSW SHARP program
  2. UNSW Scientia Fellowship
  3. ARC Centre of Excellence for Exciton Science [CE170100026]
  4. UNSW Scientia Studentship

向作者/读者索取更多资源

Thermoradiative diodes generate power through the emission of light instead of absorption, and have potential applications in night-sky power generation and waste heat recovery. This study measures the electro-optical characteristics of HgCdTe photodiodes and highlights the need for high radiative efficiencies in mid-infrared semiconductors for thermoradiative power generation.
The thermoradiative diode represents the less well-known symmetric counterpart to solar photovoltaics that instead utilizes the net emission of light rather than absorption to generate power. While there are promising theoretical predications for its application in night-sky power generation and waste heat recovery, the current technological limits have not been explored. Here we explicitly measure the electro-optical characteristics of HgCdTe photodiodes across a range of bandgap energies in both thermoradiative and photovoltaic operation, supported by theoretical calculations that include critical nonradiative processes. At a temperature differential of only 12.5 degrees C, we measure a peak thermoradiative electrical power density of 2.26 mW/m2 for a photodiode emitting near 4.7 mu m, with an estimated radiative efficiency of 1.8%. Our results highlight the need for achieving high radiative efficiencies with mid-infrared semiconductors to deliver on the promise of thermoradiative power generation.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据