†Department of Chemistry and Biochemistry, University of Nevada, Las Vegas (UNLV), Las Vegas, Nevada 89154-4003, United States.
‡Renewable Energy, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 14109 Berlin, Germany.
ACS Appl Mater Interfaces. 2015 Aug 5;7(30):16382-6. doi: 10.1021/acsami.5b03503. Epub 2015 Jul 22.
On the basis of a combination of X-ray photoelectron spectroscopy and synchrotron-based X-ray emission spectroscopy, we present a detailed characterization of the chemical structure of CdS:O thin films that can be employed as a substitute for CdS layers in thin-film solar cells. It is possible to analyze the local chemical environment of the probed elements, in particular sulfur, hence allowing insights into the species-specific composition of the films and their surfaces. A detailed quantification of the observed sulfur environments (i.e., sulfide, sulfate, and an intermediate oxide) as a function of oxygen content is presented, allowing a deliberate optimization of CdS:O thin films for their use as alternative buffer layers in thin-film photovoltaic devices.
基于 X 射线光电子能谱和基于同步加速器的 X 射线发射光谱的组合，我们对可在薄膜太阳能电池中替代 CdS 层的 CdS:O 薄膜的化学结构进行了详细的表征。可以分析探测元素的局部化学环境，特别是硫，从而深入了解薄膜及其表面的特定物种组成。我们还对观察到的硫环境（即硫化物、硫酸盐和中间氧化物）进行了详细的定量分析，作为氧含量的函数，这使得可以对 CdS:O 薄膜进行有针对性的优化，以将其用作薄膜光伏器件的替代缓冲层。
