Photoelectrochemical properties of mesoporous NiOx deposited on technical FTO via nanopowder sintering in conventional and plasma atmospheres

被引：17

作者：

Awais, Muhammad ^{[1
]}

Dowling, Denis D. ^{[2
]}

Decker, Franco ^{[3
]}

Dini, Danilo ^{[3
]}

机构：

[1] King Abdulaziz Univ, Dept Ind Engn, Rabigh, Saudi Arabia

[2] Univ Coll Dublin, Sch Chem & Bioproc Engn, Dublin 2, Ireland

[3] Univ Roma La Sapienza, Dept Chem, I-00185 Rome, Italy

来源：

SPRINGERPLUS | 2015年 / 4卷

关键词：

Nickel oxide; Nanopowder; p-type semiconductor; electrochemistry; Dye-sensitized solar cell; FTO; Solar conversion; SENSITIZED SOLAR-CELLS; ELECTROCHROMIC PROPERTIES; TUNGSTEN BRONZES; FILMS; PHOTOCATHODES; ELECTRODES; CONDUCTIVITY; EFFICIENCY; STATES;

D O I：

10.1186/s40064-015-1265-3

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Nanoporous nickel oxide (NiOx) has been deposited with two different procedures of sintering (CS and RDS). Both samples display solid state oxidation at about 3.1 V vs Li+/Li. Upon sensitization of CS/RDS NiOx with erythrosine b (ERY), nickel oxide oxidation occurs at the same potential. Impedance spectroscopy revealed a higher charge transfer resistance for ERY-sensitized RDS NiOx with respect to sensitized CS NiOx. This was due to the chemisorption of a larger amount of ERY on RDS with respect to CS NiOx. Upon illumination the photoinduced charge transfer between ERY layer and NiOx could be observed only with oxidized CS. Photoelectrochemical effects of sensitized RDS NiOx were evidenced upon oxide reduction. With the addition of iodine RDS NiOx electrodes could give the reduction iodine. iodide in addition to the reduction of RDS NiOx. p-type dye sensitized solar cells were assembled with RDS NiOx photocathodes sensitized either by ERY or Fast Green. Resulting overall efficiencies ranged between 0.02 and 0.04 % upon irradiation with solar spectrum simulator (I-in: 0.1 W cm(-2)).

引用

页数：24

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