Organic photovoltaic array and method of manufacture

A technology of photovoltaic cells and organic solar energy, applied in photovoltaic power generation, final product manufacturing, organic semiconductor devices, etc., can solve undescribed problems and achieve the effect of improving efficiency and reproducibility

Inactive Publication Date: 2013-08-21
UNIV OF SOUTH FLORIDA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The prior art at the time of making this invention does not describe how to achieve these goals of manufacturing cheaper, simpler and enhanced transparency devices

Method used

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  • Organic photovoltaic array and method of manufacture
  • Organic photovoltaic array and method of manufacture

Examples

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Embodiment 1

[0040] Indium Tin Oxide (ITO) was patterned using standard photolithographic methods to have a nominal sheet resistance of 4-10 Ω / square area Low alkaline earth metal boroaluminosilicate glass (Delta Technology, Inc.) and cleaned as described elsewhere (Lewis et al., Fabrication of organic solar array for applications in microelectromechanical systems. Journal of Renewable and Sustainable Energy 2009, 1 ,013101-9). Then, the structure was exposed to a UV lamp set at 25W in constant intensity mode for 1.4 seconds. The structures were developed using a Shipley MF319 for approximately 2.5 minutes and rinsed with water. The substrate was then hard baked at 145°C for 4 minutes, and any excess photoresist was cleaned off with acetone and cotton. After cleaning, use 20% HCl-7% HNO on a hot plate at 100 °C 3 The solution etches the substrate for about 5 to 11 minutes. The etched substrate was then cleaned by hand with acetone followed by isopropanol and further cleaned with UV-oz...

Embodiment 2

[0046] Using the method described in Example 1, using pre-cut 4" x 4" ITO glass substrates produced figure 1 In the reverse organic photovoltaic cell 1 shown in , the nominal sheet resistance of the ITO glass substrate is 4-10Ω / square area and has Low alkaline earth boroaluminosilicate glass (Delta Technology, Inc., Tallahassee, FL). The reverse photovoltaic cell 1 consists of different layers of active material and terminals (positive and negative) built on a substrate 5 . The positive electrode 10 made of ITO in this example is spray-coated on the substrate 5 to form protruding from the first set of edges of the substrate 5. pattern. The interstitial layer 40 covers the positive electrode 10, except for the outermost edges, such as figure 2 shown in (A) and allows for the use of ITO as the cathode discussed in Example 1. The composition of the SAM layer is chosen to provide a gradient for charge across the interface, approaching a conventional p-n junction of organic ...

Embodiment 3

[0048] In order to have a good reference point for a multi-cell array consisting of four identical small cells (4mm 2 ) form, such as figure 2 (B) shown. The cell is sandwiched between two interdigitated electrodes, designated 50 and 51 . Using the same procedure as described in Example 1, a test device was fabricated using m-PEDOT500 as the positive electrode.

[0049] ITO typically has a work function of -4.9eV. The function of ITO in conventional OPV devices is the positive electrode. It has been previously reported that by adding an electron transport layer such as ZnO in an inverted OPV single cell (Zou et al., Metal grid / conducting polymer hybrid transparent electrode for inverted polymer solar cells, Appl. Phys. Lett. 96(2010) 203301–203304) 、TiO 2 (Huang et al., A Semi-transparent plastic solar cell fabricated by a lamination process, Adv. Mater.20 (2008) 415–419; Yu et al., Efficient inverted solar cells using TiO 2 nanotube arrays, Nanotechnology 19 (2008) 255...

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Abstract

The fabrication and characterization of a large scale inverted organic solar array fabricated by using all-spray process are disclosed. The organic solar array consists of four layers: ITO-Cs2CO3-(P3HT: PCBM)-modified PEDPT: PSS, on a substrate. With PEDPT:PSS as an anode, the encapsulated solar array shows more than 30% transmission in the visible to near IR range. Optimization by thermal annealing was performed based on single-cell or multiple-cell arrays. Solar illumination has been demonstrated to improve solar array efficiency up to 250% with device efficiency of 1.80% under AM1.5 irradiance. The performance enhancement under illumination occurs only with sprayed devices, indicating device enhancement under sunlight, which is beneficial for solar energy applications. The semi-transparent property of the solar module allows for applications on windows and windshields, indoor applications, and soft fabric substances such as tents, military back-packs or combat uniforms, providing a highly portable renewable power supply for deployed military forces.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Patent Application No. 61 / 422,561, filed February 14, 2011, entitled "Organic Photovoltaic Array and Method of Manufacture," the contents of which are incorporated herein by reference. technical field [0003] The present invention relates to spray-fabricated organic solar photovoltaic cells. Specifically, the present invention provides a new method of manufacturing an organic solar photovoltaic cell using spray deposition and an organic solar photovoltaic cell manufactured by the method. Background technique [0004] Energy consumption has increased dramatically in recent years, partly due to rapid industrial development on a global scale. Increased energy consumption is straining natural resources such as fossil fuels and straining the global capacity to deal with the by-products of consuming those resources. Also, the demand for energy is expected to increase sign...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/48
CPCB82Y10/00Y02E10/549Y02P70/50H10K71/12H10K85/113H10K85/1135H10K85/215H10K30/30H10K2102/00
Inventor 蒋晓梅贾森·莱维斯
Owner UNIV OF SOUTH FLORIDA
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