X-ray photoelectron-spectroscopic studies of carbon fiber surfaces. 11. Differences in the surface chemistry and bulk structure of different carbon fibers based on poly(acrylonitrile) and pitch and comparison with various graphite samples
X-ray photoelectron-spectroscopic studies of carbon fiber surfaces. 11. Differences in the surface chemistry and bulk structure of different carbon fibers based on poly(acrylonitrile) and pitch and comparison with various graphite samples
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DOI：
10.1021/cm00009a020
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发表时间：
1990-05
影响因子：
8.6
通讯作者：
Yaoming Xie;P. Sherwood
中科院分区：
文献类型：
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作者：
Yaoming Xie;P. Sherwood
结论从本文给出的光致发光数据可以明显看出，铜空位是扩散的重要缺陷。这一发现证实了我们前面提到的化学处理对CuInSe2中DCU的影响的结果，并将在未来的出版物中报告和讨论。通过更广泛地使用金属内扩散实验和铜提取来控制铜含量，在较低的温度下工作，避免使用具有损坏表面区域的样品，以及使用更广泛的高质量晶体供应，可以对CuInSe2的流明光谱进行更完整(和更坚定)的解释。我们感谢K.Bachmann(北卡罗来纳州立大学)、H.W.Schock(IPE，斯图加特大学)和S.Endo(东京科学大学)提供的CuInSe2样品。这项研究部分得到了以色列耶路撒冷的美以双国科学基金会和以色列国家研究与发展委员会与KFA Jülich(FRG)的支持。根据合同DE-AC02-83CH10093，SERI的研究由美国能源部提供支持。
Conclusion From the photoluminescence data presented here it is apparent that the important defect for diffusion is the copper vacancy. This finding confirms results fromthe effects of chemical treatments on DCu in CuInSe2, which we mentioned earlier, and which will be reported on and discussed in a future publication. More complete (and firmer) interpretation of lumines-cence spectra of CuInSe2 may become possible bywider use of metal in-diffusion experiments and Cu extraction, to control Cu content, working at lower temperatures, avoiding the use of samples with damaged surface regions, and use of wider supplies of high quality crystals.Acknowledgment. We thank K. Bachmann (North Carolina State University), H. W. Schock (IPE, University Stuttgart), and S. Endo (Science University of Tokyo) for samples of CuInSe2. This research is supported, in part, by the US-Israel Binational Science Foundation, Jerusalem, Israel, and by the Israel National Council for Research and Development with the KFA Jülich (FRG). At SERI research is supported by the US Department of Energy under Contract DE-AC02-83CH10093.