Tandem Dye-Sensitized Solar Cells Based on TCO-less Back Contact Bottom Electrodes

India-Japan Expert Group Meeting on Biomolecular Electronics & Organic Nanotechnology for Environment Preservation

物理学;生物科学;生态环境科学

Baranwal, Ajay K.^1 ; Fujikawa, Naotaka^1 ; Nishimura, Terumi^1 ; Ogomi, Yuhei^1 ; Pandey, Shyam S.^1 ; Ma, Tingli^1 ; Hayase, Shuzi^1

Division of Green Electronics, Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu

808-0196, Japan^1

关键词: Bottom electrodes;    Near infrared light;    Novel architecture;    Photoconversion efficiency;    Phthalocyanine dyes;    Proof of concept;    Series-connected;    Visible light;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/704/1/012003/pdf
DOI  :  10.1088/1742-6596/704/1/012003

来源: IOP

【 摘 要 】

Mechanically stacked and series connected tandem dye sensitized solar cells (T-DSSCs) are fabricated in novel architectures. The architecture consist of TCO tandem DSSCs stacked with TCO-less back contact DSSCs as bottom electrodes (TCO-less tandem DSSCs). Resulting TCO-less tandem DSSCs architecture finds its usefulness in efficient photon harvesting due to improved light transmission and enhanced photons reaching to the bottom electrodes. The fabricated tandem performance was verified with visible light harvesting model dyes D131 and N719 as a proof of concept and provided the photoconversion efficiency (PCE) of 6.06% under simulated condition. Introduction of panchromatic photon harvesting by utilizing near infrared light absorbing Si-phthalocyanine dye in combination with the modified tandem DSSC architecture led to enhancement in the PCE up to 7.19%.