Material Properties - Short Circuit Current Correlations in Quantum Dot Solar Cell
作者： Jose Rajan , Muzakir Saifful Kamaluddin
DOI:
关键词: Dye-sensitized solar cell 、 Multiple exciton generation 、 HOMO/LUMO 、 Absorption (electromagnetic radiation) 、 Chemistry 、 Quantum dot 、 Optoelectronics 、 Analytical chemistry 、 Photoluminescence 、 Absorption spectroscopy 、 Solar cell
摘要: Quantum dots (QDs) semiconductor of size below its exciton Bohr radius shows fascinating effect quantum confinement i.e., multiple generation (MEG) upon absorption single photon with sufficient energy. However despite the remarkable properties, application QDs for replacement dye molecules as light absorber in dot solar cell (QDSC) is still doubtful due to inferior power conversion efficiency (~8.6%) comparison dye-sensitized (DSSC) (~13%). In order study drawback that arises from absorber, three were employed QDSC fabrication viz., CdSe, CdTe and CuInS 2 ; layered onto TiO photoelectrode by direct attachment, ligand–functionalization paste–layering. Additionally, Z907–based DSSC was fabricated strengthen conclusion on correlation between cross-section fluorophore short circuit current cell. Five efficiency-affecting parameters are studied (i) ligand usage, (ii) distribution, (iii) redox potential electrolyte, (iv) electronic stability (v) electrochemical measurements, spectroscopy, photoluminescence spectroscopy chemical ab-initio calculations. Significant setbacks observed, inefficient electron injection through ligand, unnecessary self-injection small big cluster QDs, replenishment at HOMO non-uniform uneven excited-state distribution leads LUMO low than Z907 dye.
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