Color tuning in Cu(In,Ga)Se2 thin‐film solar cells by controlling optical interference in transparent front layers,Progress in Photovoltaics

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Color tuning in Cu(In,Ga)Se2 thin‐film solar cells by controlling optical interference in transparent front layers
Progress in Photovoltaics ( IF 8.0 ) Pub Date : 2020-03-25 , DOI: 10.1002/pip.3272
Dae‐Hyung Cho _{1,

2} , Woo‐Jung Lee ₁ , Myeong‐Eon Kim ₁ , Byungha Shin ₂ , Yong‐Duck Chung _{1,

3}

Affiliation

Aesthetic factors such as colorization in harmony with the surrounding environment are becoming important in the field of applied photovoltaics. Therefore, there exists a need to realize colors in solar cells, with minimum additional cost and efficiency loss. We tuned the color of Cu(In,Ga)Se₂ thin‐film solar cells by controlling the optical interference between the sputtered Zn(O,S) buffer layer and indium tin oxide (ITO) transparent electrode layer, which are intrinsic components of the solar cell device, without any additional process and/or material. The nontoxic Cd‐free buffer layer was prepared in consideration of the environmental factor. In order to minimize the degradation of the photovoltaic performance of the solar cell, the experiment was conducted within the thickness (optical path length) of the Zn(O,S) and ITO transparent front layers, which affected the solar cell performance more optically and less electrically. As the antireflection coating thickness increased, the solar cell was calculated to have a wider color range, lower luminosity, and lower J_SC loss. Relatively even efficiencies were obtained with a wide color range.

中文翻译：

通过控制透明前层中的光干涉来调节Cu（In，Ga）Se2薄膜太阳能电池的颜色

在应用的光伏领域中，诸如与周围环境协调一致的着色之类的美学因素变得越来越重要。因此，需要以最小的附加成本和效率损失来实现太阳能电池中的颜色。我们调整了Cu（In，Ga）Se ₂的颜色通过控制溅射的Zn（O，S）缓冲层和铟锡氧化物（ITO）透明电极层之间的光学干涉来形成薄膜太阳能电池，这是太阳能电池设备的固有组件，无需任何其他工艺和/或材料。考虑到环境因素，准备了无毒的无镉缓冲层。为了最大程度地降低太阳能电池光伏性能的下降，在Zn（O，S）和ITO透明前层的厚度（光程长度）内进行了实验，这在光学上和光学上都对太阳能电池性能产生了影响。更少的电力。随着增透膜厚度的增加，计算得出的太阳能电池具有较宽的颜色范围，较低的发光度和较低的J _SC失利。在较宽的色彩范围内可获得相对均匀的效率。

更新日期：2020-03-25

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