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<p>Transparent solar cells (TSCs) could accelerate the adoption of photovoltaics by enabling applications that were previously inaccessible, such as in windows of buildings and on agricultural land. In this Review, we discuss the working mechanisms of wavelength-selective TSCs, their potential in human-targeted and plant-targeted products, and provide application-specific metrics for ease of comparison between technologies. The goal with wavelength-selective TSCs is to optimize power production and visible-light transmission, as captured by the light utilization efficiency (LUE) metric. State-of-the-art wavelength-selective TSCs have reached an LUE of 5.4% and many tend to be tinted with undesirable colours, falling short of what is necessary for mass-market commercialization. Here, we propose new application-specific metrics, weighted towards the ‘vision’ spectrum in both plant-based and human-vision-based applications. Additionally, on the basis of trends in LUE over time, we estimate that an LUE of 8% could be reached by 2030 and an LUE of 12% could be achieved by 2040.</p>

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Wavelength-selective transparent solar cells

  • 期刊论文

  • 发表日期：

    2025年6月3日

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  • Carson Malhado,
  • Waad Naim,
  • Miles C. Barr,
  • Christopher K. Herrera,
  • Richard R. Lunt

摘要

Transparent solar cells (TSCs) could accelerate the adoption of photovoltaics by enabling applications that were previously inaccessible, such as in windows of buildings and on agricultural land. In this Review, we discuss the working mechanisms of wavelength-selective TSCs, their potential in human-targeted and plant-targeted products, and provide application-specific metrics for ease of comparison between technologies. The goal with wavelength-selective TSCs is to optimize power production and visible-light transmission, as captured by the light utilization efficiency (LUE) metric. State-of-the-art wavelength-selective TSCs have reached an LUE of 5.4% and many tend to be tinted with undesirable colours, falling short of what is necessary for mass-market commercialization. Here, we propose new application-specific metrics, weighted towards the ‘vision’ spectrum in both plant-based and human-vision-based applications. Additionally, on the basis of trends in LUE over time, we estimate that an LUE of 8% could be reached by 2030 and an LUE of 12% could be achieved by 2040.