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A kind of inverted organic photovoltaic cell and preparation method thereof
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A technology of organic photovoltaic cells and light harvesting, applied in photovoltaic power generation, circuits, electrical components, etc., to achieve the effects of improving short-circuit current, reducing loss, and good integration
Active Publication Date: 2019-10-18
江苏博创升降机械有限公司
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[0004] The invention proposes an inverted organic photovoltaic cell device structure and its preparation process, which solves the problem of simple modification of the cathode in an inverted organic photovoltaic cell, and obtains an inverted organic photovoltaic device with low cost, high efficiency and long life
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Embodiment 1
[0022] Embodiment 1: The device structure is ITO / Ag / Bphen / SubPc:C 70 / TAPC / MoO 3 / Al, the device preparation steps and related process parameters are as follows.
[0023] The first step, substrate cleaning: ITO conductive glass is cleaned with acetone and glass cleaner in sequence, ultrasonically treated in acetone, deionized water, and isopropanol for 10 minutes, dried with nitrogen, and then irradiated with ultraviolet light for 10 minutes.
[0024] The second step is to open the ultra-high vacuum deposition system and load the pretreated ITO substrate and required materials; the ultra-high vacuum deposition system is evacuated to a pressure of less than 10 -4 Pa.
[0025]In the third step, an Ag nano collection layer is prepared on the ITO cathode substrate, the deposition rate is 0.02nm / s, and the deposition thickness is 0.5nm. During the deposition process, the temperature of the cathode substrate was controlled at 80 °C.
[0026] The fourth step is to prepare a Bphen...
Embodiment 2
[0031] Embodiment 2: The device structure is ITO / Ag / BCP / C 60 / Rubrene / MoO 3 / Ag, device preparation steps and related process parameters are as follows.
[0032] The first step, substrate cleaning: ITO conductive glass is cleaned with acetone and glass cleaner in sequence, ultrasonically treated in acetone, deionized water, and isopropanol for 10 minutes, dried with nitrogen, and then irradiated with ultraviolet light for 10 minutes.
[0033] The second step is to open the ultra-high vacuum deposition system and load the pretreated ITO substrate and required materials; the ultra-high vacuum deposition system is evacuated to a pressure of less than 10 -4 Pa.
[0034] The third step is to prepare an Ag nano collection layer on the ITO cathode substrate, the deposition rate is 0.1nm / s, and the deposition thickness is 2nm. During the deposition process, the temperature of the cathode substrate was controlled at 100 °C.
[0035] In the fourth step, a BCP exciton blocking layer ...
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Abstract
The invention relates to the technical field of organic optoelectronic device manufacturing, in particular to a device structure design and preparation method of an inverted organic photovoltaic cell, which mainly solves the problem of simple modification of the cathode of the inverted organic photovoltaic cell. It is proposed to use metal nano-collection layer and exciton-blocking layer structure to solve the problem of low electron collection efficiency of inverted organic photovoltaic cells, significantly improve electron collection efficiency, avoid non-radiative transition loss, improve open circuit voltage, short-circuit current, and fill factor of the device, and finally greatly Improving the energy conversion efficiency of organic photovoltaic cells. The method has simple preparation process and low cost, avoids complex chemical engineering and solvent engineering, and can greatly reduce the preparation cost of the organic photovoltaic cell.
Description
technical field [0001] The invention relates to the technical field of organic optoelectronic device manufacturing, in particular to a high-efficiency inverted organic photovoltaic cell and a preparation method thereof. Background technique [0002] Severe energy and environmental crises have prompted human beings to look for new energy sources that can replace traditional fossil fuels. Among them, solar energy not only has the advantages of cheapness and cleanliness, but also is inexhaustible. It is predicted that solar energy will be the main energy source in the next 100 years and become the best way to solve the energy shortage problem. After years of development, the energy efficiency of inorganic photovoltaic cells has exceeded 40%, and industrialization has been achieved. Compared with inorganic photovoltaic cells, organic photovoltaic cells have attracted interest and attention in the field of scientific research because of a series of advantages. Specifically, th...
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