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A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells
นักวิจัย : Nguyen, Loc H. , Mulmudi, Hemant K. , Sabba, Dharani , Kulkarni, Sneha A. , Batabyal, Sudip Kumar , Nonomura, Kazuteru , Grätzel, Michael , Mhaisalkar, Subodh Gautam
คำค้น : -
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2555
อ้างอิง : Nguyen, L. H., Mulmudi, H. K., Sabba, D., Kulkarni, S. A., Batabyal, S. K., Nonomura, K., et al. (2012). A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells. Physical Chemistry Chemical Physics, 14(47), 16182-16186. , http://hdl.handle.net/10220/11061 , http://dx.doi.org/10.1039/C2CP42959D
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : Physical chemistry chemical physics
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Ruthenium-based C106 and organic D131 sensitizers have been judicially chosen for co-sensitization due to their complementary absorption properties and different molecular sizes. Co-sensitization yields a higher light-harvesting efficiency as well as better dye coverage to passivate the surface of TiO2. The co-sensitized devices C106 + D131 showed significant enhancement in the performance (η = 11.1%), which is a marked improvement over baseline devices sensitized with either D131 (η = 5.6%) or C106 (η = 9.5%). The improved performance of the co-sensitized cell is attributed to the combined enhancement in the short circuit current, open circuit voltage, and the fill-factor of the solar cells. Jsc is improved because of the complementary absorption spectra and favorable energy level alignments of both dyes; whereas, Voc is improved because of the better surface coverage helping to reduce the recombination and increase the electron life time. The origins of these enhancements have been systematically studied through dye desorption, absorption spectroscopy, and intensity modulated photovoltage spectroscopy investigations.

บรรณานุกรม :
Nguyen, Loc H. , Mulmudi, Hemant K. , Sabba, Dharani , Kulkarni, Sneha A. , Batabyal, Sudip Kumar , Nonomura, Kazuteru , Grätzel, Michael , Mhaisalkar, Subodh Gautam . (2555). A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Nguyen, Loc H. , Mulmudi, Hemant K. , Sabba, Dharani , Kulkarni, Sneha A. , Batabyal, Sudip Kumar , Nonomura, Kazuteru , Grätzel, Michael , Mhaisalkar, Subodh Gautam . 2555. "A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Nguyen, Loc H. , Mulmudi, Hemant K. , Sabba, Dharani , Kulkarni, Sneha A. , Batabyal, Sudip Kumar , Nonomura, Kazuteru , Grätzel, Michael , Mhaisalkar, Subodh Gautam . "A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2555. Print.
Nguyen, Loc H. , Mulmudi, Hemant K. , Sabba, Dharani , Kulkarni, Sneha A. , Batabyal, Sudip Kumar , Nonomura, Kazuteru , Grätzel, Michael , Mhaisalkar, Subodh Gautam . A selective co-sensitization approach to increase photon conversion efficiency and electron lifetime in dye-sensitized solar cells. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2555.