PEDOT:PSS/n-Si Hybrid Solar Cells with Al₂O₃ Interfiacial Passivation Layer


Hybrid solar cells, consisting of both organic and inorganic layers have shown to be promising in developing solar cells with suitable photovoltaic properties, advantage of low temperature processing and much lower production cost than conventional p-n junction solar cells. For example, poly (3,4-ethylene-diozythiophene): polystyrenesulfonate (PEDOT:PSS) with work function of 5.1 eV and spin-coated on Si substrate leads to development of a rectifying Schottky junction and is used to design and fabricate hybrid solar cells, in which the organic PEDOT:PSS acts as a hole transporting layer. It has been shown in that the organic layer in a PEDOT:PSS/ n-Si hybrid solar cell, fabricated at temperatures below 100 C°, can also act as electron blocking layer, resulting in a low reverse saturation current density of 3.8 x 10-9 mA/cm2 and Schottky barrier height of 0.8 eV. Furthermore, Aluminum oxide (Al2O3) is shown to be effective as the passivation layer in improving the photovoltaic properties of solar cells by passivating the dangling bonds and reducing the density of surface states.

Meeting Name

16th IEEE International Conference on Smart Cities: Improving Quality of Life using ICT, IoT and AI, HONET-ICT 2019 (2019: Oct. 6-9, Charlotte, NC)


Electrical and Computer Engineering

Keywords and Phrases

Alumina; Aluminum Oxide; Conducting Polymers; Dangling Bonds; Internet of Things; Low Temperature Production; Passivation; Schottky Barrier Diodes; Semiconductor Junctions; Silicon Solar Cells; Smart City; Solar Power Generation; Sulfur Compounds; Temperature, Electron Blocking Layer; Hole Transporting Layers; Low Temperature Processing; P-N Junction Solar Cells; Photovoltaic Property; Polystyrene Sulfonate; Reverse-Saturation Currents; Schottky Barrier Heights, Phosphorus Compounds

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Document Type

Article - Conference proceedings

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© 2019 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Oct 2019