Electrically Controllable Light Trapping for Self-Powered Switchable Solar Windows
Electrically Controllable Light Trapping for Self-Powered Switchable Solar Windows
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DOI：
10.1021/acsphotonics.6b00518
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发表时间：
2017-01-01
期刊：
影响因子：
7
通讯作者：
Munday, Jeremy N.
中科院分区：
文献类型：
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作者：
Murray, Joseph;Ma, Dakang;Munday, Jeremy N.
电控制光的透明度和散射的能力对于许多光电器件来说非常重要。然而，这种多功能性通常会带来额外的不必要的光吸收和功率损耗。在这里，我们提出了一种基于聚合物分散液晶（PDLC）与半导体吸收器耦合的混合可切换太阳能窗装置，它可以在高透射和高散射状态之间切换，同时发电。通过在 PDLC 层上施加电压，该设备从不透明的光散射结构（可用于室内灯光调暗、隐私和温度控制）切换为清晰透明的窗口。此外，PDLC 的工作功率要求非常低（
The ability to electrically control transparency and scattering of light is important for many optoelectronic devices; however, such versatility usually comes with additional unwanted optical absorption and power loss. Here we present a hybrid switchable solar window device based on polymer dispersed liquid crystals (PDLCs) coupled to a semiconducting absorber, which can switch between highly transmissive and highly scattering states while simultaneously generating power. By applying a voltage across the PDLC layer, the device switches from an opaque, light scattering structure (useful for room light dimming, privacy, and temperature control) to a clear, transparent window. Further, enabled by the very low operating power requirements of the PDLC (