Indium-free CIGS analogues: general discussion.
Indium-free CIGS analogues: general discussion.
复制标题
无铟 CIGS 类似物：一般性讨论。
DOI：
10.1039/d2fd90055f
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发表时间：
2022
影响因子：
3.4
通讯作者：
Andreasen JW
中科院分区：
文献类型：
--
作者：
Andreasen JW
大卫米茨回答说：关于对新兴的薄吸收体材料进行可靠的吸收测量和评估的重大挑战的观点是一个很好的观点。一般来说，使用紫外-可见光谱法进行的吸收测量可能会受到表面粗糙度和散射以及许多其他预期并发症的影响。在使用这些测量来提取带隙值方面，我们可以利用量子效率（QE）曲线中的长波长截止，因为这允许我们直接提取器件相关的带隙值。虽然有各种方法可以从该曲线中提取带隙，但我们通常使用导数方法（即，取QE相对于波长或能量的导数，并在长波长截止处选择该函数中的峰值）。这种利用量子效率曲线在吸收阈值区域内的交点的方法也是最近的先进能量材料中提出的一种带隙提取方法。文章，基准新兴的光伏技术作为带隙值的函数。1
David Mitzi replied: The point about signi cant challenges in making and evaluating reliable absorption measurements for emerging thin- lm absorber materials is a good one. In general, absorption measurements using UV-Vis spectroscopy can be in uenced by lm roughness and scatter, as well as a number of other prospective complications. In terms of using these measurements to extract a bandgap value, we o en make use of the long wavelength cut-off in the quantum efficiency (QE) curve, since this allows us to directly extract a bandgap value on a device-relevant lm. Although there are various methods for extracting the bandgap from this curve, we generally use a derivative method (ie, taking the derivative of the QE with respect to wavelength or energy and selecting the peak in this function at the long wavelength cutoff). This approach of using the in ection point of the QE curve in the region of the absorption threshold is also a suggested method of bandgap extraction put forward in a recent Adv. Energy Mater. article that benchmarks emerging photovoltaic technologies as a function of bandgap value. 1