%0 Journal Article
%T Photovoltaic Properties of the Modified n-Si(111) Electrodes with Ethyl and Carboxyls<br>
%A Yuxue ZHAO
%A Yabo WEI
%A Wensheng YANG
%A Pudun ZHANG
%A Xin ZHOU
%A Qinghong XU
%A <br>
%J 材料科学技术学报
%D 2008
%I 
%X n-Si(111) surface tailed -C2H5, -C2H4COOH, -C2H2COOH were prepared by the reactions among Si-H to ethyl-Grignard, methyl acrylate and ethyl propionate, and the carboxyls were formed under the existence of trifluoroacetic acid. The composite n-Si(111) electrodes were obtained by depositing Pt nanodots and the photovoltaic characteristics for these electrodes were studied in I-/I-3 redox electrolyte. The j-U (photo current density-potential) behaviors of photo-voltage and photocurrent densities to the electrodes under solar illumination varied regularly with groups of -C2H2COOH-C2H4COOH-H-C2H5. The photo-voltage and photocurrent density of the electrode tailed -C2H2COOH were -0.641 V and 5.25 mA/cm2, respectively, more negative than those of the non-conjugated modification.
%K n-Si(111) wafer
%K Photo-voltage
%K Photocurrent density
%K Semiconductor electrode<br>
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=84529CA2B2E519AC&jid=324DC3CAB22330DB19158AE0A9B7BFA5&aid=597CB0A31C3CD2FBEBEC04A89FED5D8D&yid=67289AFF6305E306&vid=B91E8C6D6FE990DB&iid=0B39A22176CE99FB&sid=0B4F496D54044D86&eid=1B97AE5098AEB49C&journal_id=1005-0302&journal_name=材料科学技术学报&referenced_num=0&reference_num=23