Inverted solar cell structure adopting surface plasmon effect and manufacturing method thereof

Abstract

The invention discloses an inverted solar cell structure adopting a surface plasmon effect. The inverted solar cell structure comprises a cathode transparent conductive substrate, an electron transport layer, a metal-semiconductor core-shell nanoparticle layer, an active layer, an hole transport layer and an anode electrode, wherein the electron transport layer is manufactured on the cathode transparent conductive substrate; the metal-semiconductor core-shell nanoparticle layer is manufactured on the electron transport layer; the active layer is manufactured on the metal-semiconductor core-shell nanoparticle layer; the hole transport layer is manufactured on the active layer; and the anode electrode is manufactured on the hole transport layer. According to the inverted solar cell structure and the manufacturing method thereof, metal-semiconductor core-shell nanoparticles are introduced into an interface of the electron transport layer and the active layer, the effect of enhancing light absorption of metal surface plasmons can be exerted, the metal nanoparticles can be prevented from being in direct contact with the active layer to form a charge recombination center, and the core shell and the electron transport layer are in energy level match to facilitate charge separation and transport, thereby the photoelectric conversion efficiency of solar cells can be effectively improved.

Description

technical field [0001] The invention belongs to the technical field of organic photoelectric devices, and relates to an inverted organic solar cell, in particular to an inverted solar cell structure and a preparation method using the surface plasmon effect. Background technique [0002] Organic solar cells have the advantages of wide material sources, simple preparation process, and can be prepared on flexible substrates, and have received extensive attention in recent years. The traditional positive organic solar cell structure generally uses ITO glass as the anode, PEDOT:PSS as the hole transport layer, Al as the cathode, and the active layer is located between the PEDOT:PSS and Al electrodes. Solar cells with this structure have problems of poor life and stability. The acidic PEDOT:PSS solution has a corrosive effect on ITO, and the Al electrode with low work function is easily passivated by water vapor and oxygen in the air. In this context, an organic solar cell with ...

AI Technical Summary

Problems solved by technology

However, direct contact between metal nanoparticles and the active layer will form a charge recombination center, which is not conducive to the separation of photogenerated carriers and has an adverse effect on the improvement of cell efficiency.

Images