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Rice grain-shaped TiO2–CNT composite—a functional material with a novel morphology for dye-sensitized solar cells

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Rice grain-shaped TiO2–CNT composite—a functional material with a novel morphology for dye-sensitized solar cells
นักวิจัย : Zhu, Peining , Nair, A. Sreekumaran , Yang, Shengyuan , Peng, Shengjie , Elumalai, Naveen Kumar , Ramakrishna, Seeram
คำค้น : DRNTU::Science::Chemistry::Physical chemistry::Photochemistry.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Zhu, P., Nair, A. S., Yang, S., Peng, S., Elumalai, N. K., & Ramakrishna, S. (2012). Rice grain-shaped TiO2–CNT composite—a functional material with a novel morphology for dye-sensitized solar cells. Journal of photochemistry and photobiology A: chemistry, 231(1), 9-18. , 1010-6030 , http://hdl.handle.net/10220/17139 , http://dx.doi.org/10.1016/j.jphotochem.2012.01.002
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Journal of photochemistry and photobiology A: chemistry
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Titanium dioxide-multiwalled carbon nanotube (denoted as TiO2–CNT) nanocomposites with a novel rice-grains nanostructure are synthesized by electrospinning and subsequent high temperature sintering. The rice grain-shaped TiO2 is single crystalline with a large surface area and the single crystallinity is retained in the TiO2–CNT composite as well. At very low CNT loadings (0.1–0.3 wt% of TiO2), the rice grain shape remains unchanged while at high CNT concentrations (8 wt%), the morphology distorts with CNTs sticking out of the rice-grain shape. The optimum concentration of CNTs in the TiO2 matrix for best performance in dye-sensitized solar cells (DSCs) is found to be 0.2 wt%, which shows a 32% enhancement in the energy conversion efficiency. The electrochemical impedance spectroscopy (EIS) and the incident photon-to-electron conversion efficiency (IPCE) measurements show that the charge transfer and collection are improved by the incorporation of CNTs into the rice grain-shaped TiO2 network. We believe that this facile one-pot method for the synthesis of the rice-grain shaped TiO2–CNT composites with high surface area and single crystallinity offers an attractive means for the mass-scale fabrication of the nanostructures for DSCs since electrospinning is a simple, cost-effective and scalable means for the commercial scale fabrication of one-dimensional nanostructures.

บรรณานุกรม :
Zhu, Peining , Nair, A. Sreekumaran , Yang, Shengyuan , Peng, Shengjie , Elumalai, Naveen Kumar , Ramakrishna, Seeram . (2555). Rice grain-shaped TiO2–CNT composite—a functional material with a novel morphology for dye-sensitized solar cells.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhu, Peining , Nair, A. Sreekumaran , Yang, Shengyuan , Peng, Shengjie , Elumalai, Naveen Kumar , Ramakrishna, Seeram . 2555. "Rice grain-shaped TiO2–CNT composite—a functional material with a novel morphology for dye-sensitized solar cells".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Zhu, Peining , Nair, A. Sreekumaran , Yang, Shengyuan , Peng, Shengjie , Elumalai, Naveen Kumar , Ramakrishna, Seeram . "Rice grain-shaped TiO2–CNT composite—a functional material with a novel morphology for dye-sensitized solar cells."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Zhu, Peining , Nair, A. Sreekumaran , Yang, Shengyuan , Peng, Shengjie , Elumalai, Naveen Kumar , Ramakrishna, Seeram . Rice grain-shaped TiO2–CNT composite—a functional material with a novel morphology for dye-sensitized solar cells. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.