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Enhanced efficiency polymer solar cells using aligned magnetic nanoparticles

A technology of magnetic nanoparticles and solar cells, which is applied in the field of polymer solar cells and can solve problems such as exciton attenuation and luminescence

Inactive Publication Date: 2015-05-13
THE UNIVERSITY OF AKRON
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, if the excitons are generated too far from the donor / acceptor (D / A) interface, the excitons may decay, resulting in luminescence

Method used

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  • Enhanced efficiency polymer solar cells using aligned magnetic nanoparticles
  • Enhanced efficiency polymer solar cells using aligned magnetic nanoparticles
  • Enhanced efficiency polymer solar cells using aligned magnetic nanoparticles

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Embodiment Construction

[0031] A polymer solar cell according to the concept of the present invention is generally indicated by the numeral 10, as figure 1 shown. The polymer solar cell 10 includes an indium tin oxide (ITO) substrate or electrode 20 on which a PEDOT:PSS buffer layer 30 is disposed. Alternatively, electrode 20 may comprise any suitable high work function metal, such as Al or Ag, or these metals may be combined with, for example, ITO. Arranged on the PEDOT:PSS layer 30 is composed of polymer / fullerene and Fe 3 o 4 The composite of nanoparticles forms the active layer 40 . Finally, disposed on the active layer 40 is a calcium and aluminum electrode layer 50, although the electrode layer 50 may be formed from any suitable low work function metal. Thus, during operation, the at least partially light transmissive ITO layer 20 is configured to receive light 100 from any suitable source of solar energy, such as the sun.

[0032] Polymer solar cells were fabricated such that the ITO laye...

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Abstract

Polymer solar cells with enhanced efficiency utilize an active layer formed of a composite of polymer / fullerene and Fe3O4 nanoparticles. During the formation of the solar cell, the composite mixture is subjected to an external magnetic field that causes the nanoparticles to align their magnetic dipole moments along the direction of the magnetic field, so as to form a plurality of Fe3O4 nanochains. These nanochains serve to adjust the morphology and phase separation of the polymer / fullerene, and also serve to induce an internal electrical field by spin-polarization of the nanochains serve to increase the charge separation and charge transport processes in the solar cell, enhancing the short-current density (Jsc) and ultimately, the photoelectric converted efficiency (PCE) of the solar cell.

Description

[0001] Cross References to Related Applications [0002] This application claims the benefit of US Provisional Patent Application No. 61 / 614,741 filed March 23, 2012, the contents of which are incorporated herein by reference. technical field [0003] In general, the present invention relates to polymer solar cells. Specifically, the present invention relates to polymer solar cells using aligned magnetic nanochains. More specifically, the present invention relates to the use of aligned Fe 3 o 4 Polymer solar cells of nanochains that pass Fe in the presence of an applied static magnetic field 3 o 4 Self-assembly of nanoparticles is induced to enhance the photoelectric conversion efficiency of solar cells. Background technique [0004] Polymer solar cells (PSCs) hold promise as cost-effective, lightweight solar energy conversion platforms that offer significant benefits over inorganic silicon solar cells. New material combinations and solar cell designs have been develop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/00
CPCB82Y10/00B82Y30/00C01G49/08C01G51/04C01G53/04H01F1/0063H01F1/445H10K30/35H10K30/50Y02E10/549B82Y25/00C01P2004/17C01P2004/64C01P2006/40C01P2006/42Y10S977/735Y10S977/811Y10S977/838Y10S977/948Y02P70/50H10K85/113H10K85/215H10K85/151H10K2102/00H10K30/30
Inventor 巩雄
Owner THE UNIVERSITY OF AKRON