Organic spintronic devices and methods for making the same

a spintronic and organic technology, applied in the field of electronic devices, can solve the problems of environmental damage and/or risk, none of these energy sources satisfactorily eliminate environmental concerns, widespread use, etc., and achieve the effects of increasing the relaxation rate of spin lattices, reducing the risk of damage, and reducing the cost of oled and charge mobility in fet devices

Inactive Publication Date: 2014-12-04
UNIV OF UTAH RES FOUND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The integration of spin active molecular radicals improves the efficiency of organic solar cells by increasing short-circuit current and fill factor, leading to enhanced power conversion efficiency and reduced manufacturing costs.

Problems solved by technology

Conventional energy sources such as coal, oil, natural gas, and uranium, represent a finite resource and furthermore result in adverse consequences in terms of environmental damage and / or risk of damage.
Despite some improvements in pollution control and safety protocols, none of these energy sources satisfactorily eliminates environmental concerns.
Each of these technologies currently has economic, practical, and / or technical hurdles which prevent their widespread use.
The technology of photovoltaic devices is well developed, but large scale application is hampered by the high price of the cells.
The widespread use of solar power has been elusive because it can be difficult and costly to manufacture commercial photovoltaic cells, which are made of inorganic crystals such as silicon.
Unfortunately, poor energy conversion efficiencies have thus far prevented organic-based devices from being successfully commercialized.
However, none of the existing techniques provides sufficient improvements in efficiencies and reduced manufacturing costs.

Method used

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  • Organic spintronic devices and methods for making the same
  • Organic spintronic devices and methods for making the same
  • Organic spintronic devices and methods for making the same

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[0055]Without being bound to any particular theory, one of the main contributing factors to the low efficiency appears to be the low output current due to the high carrier recombination rate and low carrier mobility. In bulk heterojunction organic photovoltaics, the accepted mechanism for current production is the following: First, upon illumination, there is exciton generation in the blend, followed by a migration of the exciton to the donor-acceptor interface where, either because of the existence of a build in potential or the dipole interaction between the donor and the acceptor, this exciton is separated into a free electron in the acceptor material and a hole in the donor material. From this point, the electron and hole migrate to the cathode and the anode, respectively. For efficient device performance, one has an exciton diffusion length that is larger than the average donor or acceptor aggregate size to minimize exciton recombination. For efficient exciton separation the ex...

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Abstract

An organic spintronic photovoltaic device having an organic electron active layer functionally associated with a pair of electrodes. The organic electron active layer can include a spin active molecular radical distributed in the active layer which increases spin-lattice relaxation rates within the active layer. The increased spin lattice relaxation rate can also influence the efficiency of OLED and charge mobility in FET device.

Description

RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 13 / 123,493, filed Aug. 11, 2011, which is a national stage entry under 35 U.S.C. §371 of PCT Application No. PCT / US09 / 58657, filed Sep. 28, 2009, which claims priority under 35 U.S.C. §119(e) to U.S. Provisional Patent Application No. 61 / 103,817, filed Oct. 8, 2008.GOVERNMENT INTEREST[0002]This invention was made with government support under Department of Energy Grant No. 04-ER 46109 and National Science Foundation Grant Nos. 05-03172 and 08-03172. The United States government has certain rights in this invention.FIELD OF THE INVENTION[0003]This invention relates to electronic devices based on organic semiconducting materials. More specifically, the invention covers organic spintronic photovoltaic devices having unique organic compositional features. Therefore, the present invention relates generally to the fields of electrical engineering, quantum physics, chemistry, materials science,...

Claims

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Application Information

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Patent Type & AuthorityApplications(United States)
IPC IPC(8): H01L51/42H01L51/00H01L51/44H10K99/00
CPCH01L51/4253H01L51/442H01L51/0036H01L51/0047H01L51/0035H01L51/0058H01L51/0059H01L51/005H01L51/0038H01L51/0067B82Y10/00Y02E10/549H10K85/113H10K85/1135H10K85/141H10K85/215H10K85/60H01G9/2004H10K30/30H10K30/20H10K30/82H10K85/111H10K85/114H10K85/626H10K85/631H10K85/654
InventorVARDENY, ZEEV VALENTINENDOBE, ALEX
OwnerUNIV OF UTAH RES FOUND