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Organic solar cell with vertical separation between donor and receptor and preparation method thereof

A solar cell and organic technology, applied in semiconductor/solid-state device manufacturing, circuits, electrical components, etc., can solve unrealistic problems, and achieve the effect of increasing short-circuit current, ensuring transmission, and improving photoelectric conversion efficiency

Inactive Publication Date: 2013-01-23
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the realization of this structure can only be obtained by laboratory-level micro-nanofabrication methods, which is unrealistic in actual industrial production.

Method used

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  • Organic solar cell with vertical separation between donor and receptor and preparation method thereof
  • Organic solar cell with vertical separation between donor and receptor and preparation method thereof
  • Organic solar cell with vertical separation between donor and receptor and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment

[0042] Except for step 3), other steps are the same as the reference device, where step 3) is:

[0043] The material of the electron acceptor is PC70BM, and the material of the electron donor is still PBDTTT-CF. , the concentration of the mixed solution is the same. After the spin coating is finished, place the sample in a glass petri dish to ensure that the solvent o-dichlorobenzene does not evaporate within 40 minutes. Use 0.2mW / cm 2 , UV light with a wavelength of 365nm was irradiated for 40 minutes to initiate photopolymerization.

[0044] Measurements and Results

[0045] The parameters that characterize the performance of solar cells mainly include short-circuit current density, open-circuit voltage, fill factor, and photoelectric conversion efficiency. The operating current per unit light-receiving area of ​​a solar cell under short-circuit conditions is called the short-circuit current density J sc , at this time the battery output voltage is zero; the output voltag...

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Abstract

The invention discloses an organic solar cell with vertical separation between a donor and a receptor and a preparation method thereof. The organic solar cell comprises a substrate, an anode, a hole transport layer, a photoactive layer, an electron transport layer and a cathode from bottom to top in sequence. The donor or the receptor in the photoactive layer of the organic solar cell is made of an organic material with polymerizable groups, when ultraviolet light triggers the photopolymerization of the polymerizable groups, the concentration of donor gradually decreases from one side of the cathode to the anode, in addition, the concentration of the donor gradually decreases from one side of the anode to the cathode, so that the vertical separation between the donor and the receptor is realized, not only is the formation of double continuous channels facilitated to guarantee the transmission of carriers, but also a built-in electric field with direction can be produced to facilitate the exertion of the electron hole pair, short-circuit current is increased, and thus, the photoelectric conversion efficiency of battery is improved.

Description

technical field [0001] The invention belongs to the field of organic solar cell (OSC) and in particular relates to an organic solar cell which realizes vertical phase separation of an electron donor and an electron acceptor and a preparation method thereof. Background technique [0002] A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect, also known as a photovoltaic cell. Solar cells can be divided into non-exciton type (such as inorganic silicon-based solar cells, etc.) and excitonic type (such as organic solar cells) according to whether excitons are formed. Among them, the excitonic solar cell has the advantages of simple manufacture, low temperature in the preparation process, low cost, and large-area flexible devices can be produced. Tang of Kodak Laboratory reported the first photovoltaic (photovoltaic) PV heterojunction exciton solar cell (C.W.Tang, "Two-layer organic photovolta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/46H01L51/42H01L51/48
CPCY02E10/549
Inventor 张立培陈志坚肖立新龚旗煌
Owner PEKING UNIV
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