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Preparation method for perovskite type solar battery

A solar cell, perovskite-type technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as restricting large-scale application and device instability, and achieve large-scale industrial application prospects, good stability, and mild reaction conditions. Effect

Active Publication Date: 2016-01-27
HUBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the device is unstable due to the desorption of oxygen molecules on the surface of the titanium dioxide transport layer prepared by the current traditional technology under ultraviolet light, which will seriously restrict the large-scale application of perovskite solar cells.

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preparation example Construction

[0015] The invention provides a method for preparing a perovskite type solar cell, which comprises a transparent conductive substrate, a TiO 2 The electron transport layer, the perovskite light absorption layer, the hole transport layer and the metal counter electrode layer, wherein the preparation of the electron transport layer includes the following steps:

[0016] Step a, providing a transparent substrate material with a clean surface, and depositing a dense thin film of titanium dioxide on the surface of the substrate material using atomic layer deposition technology;

[0017] Step b, using molecular layer deposition technology to deposit a titanium-containing organic-inorganic composite film on the titanium dioxide dense film obtained in step a;

[0018] Step c, annealing the material obtained in step b at 400-600℃ for 0.5-5h to obtain TiO 2 Electron transport layer.

[0019] Preferably, the step a includes ultrasonic cleaning and drying the transparent conductive substrate, and ...

Embodiment 1

[0041] Step a: Ultrasonic cleaning of the FTO conductive glass and drying. After the ultraviolet ozone treatment, it is ready to be used, and a titanium dioxide dense film with a thickness of 120 nm is deposited on the clean FTO conductive glass by using the atomic layer deposition technology. The specific steps include:

[0042] a1. Put the clean surface of the FTO conductive glass into the reaction chamber of the atomic layer deposition equipment at a temperature of 80-200℃, and purge it with 50-100sccm high-purity nitrogen for 5 minutes;

[0043] a2, the TiCl with a purity greater than 97% 4 Heat to 65℃ to form TiCl 4 Steam, and the TiCl 4 The steam is fed into the reaction chamber, the pulse time is 0.05s, the exposure time is 8s, and then purged with high-purity nitrogen, the purge time is 15s;

[0044] a3. Deionized water is fed into the reaction chamber in pulse form, the pulse time is 0.02s, the exposure time is 8s, and then purged with high-purity nitrogen, the purging time ...

Embodiment 2

[0054] Step a: Ultrasonic cleaning of the ITO conductive glass and drying. After ultraviolet ozone treatment, it is ready for use, and a titanium dioxide dense film with a thickness of 300 nm is deposited on the clean ITO conductive glass by atomic layer deposition technology. The specific steps include:

[0055] a1. Put the ITO conductive glass with clean surface into the reaction chamber of the atomic layer deposition equipment at a temperature of 150℃, and purge it with 50sccm high-purity nitrogen for 5 minutes;

[0056] a2. Heat titanium tetraisopropoxide with a purity of more than 97% to 65°C to form titanium tetraisopropoxide vapor, and send the titanium tetraisopropoxide vapor into the reaction chamber in a pulsed form, the pulse time is 0.05s, and the exposure time 8s, then purge with high-purity nitrogen, the purge time is 15s;

[0057] a3. Deionized water is fed into the reaction chamber in pulse form, the pulse time is 0.02s, the exposure time is 8s, and then purged with ...

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Abstract

The invention discloses a preparation method for a perovskite type solar battery, and belongs to the field of optoelectronic materials and devices. The perovskite type solar battery comprises a transparent conducting substrate, a TiO2 electron transporting layer, a perovskite light-absorbing layer, a hole transmission layer and a metal counter electrode layer that are stacked in sequence, wherein the preparation for the electronic transporting layer comprises the steps of step a, providing a transparent substrate material with a clean surface, and depositing a titanium dioxide compact thin film on the surface of the substrate material by adopting an atomic layer depositing technology; step b, depositing a titanium-contained organic-inorganic composite film on the titanium dioxide compact thin film obtained in the step a by adopting a molecular layer depositing technology; and step c, annealing the material obtained in the step b at the temperature of 400-600 DEG C for 0.5-5 hours to obtain the TiO2 electron transporting layer. The TiO2 electron transporting layer provided by the invention is higher in the degree of crystallinity, uniform in film formation and lower in impedance, so that the photo-generated current density is dramatically increased, and the photoelectric converting efficiency and the thermal stability of the devices are greatly improved.

Description

Technical field [0001] The invention belongs to the field of solar cell preparation, and particularly relates to a method for preparing a perovskite-type solar cell. Background technique [0002] In recent years, in order to solve increasingly severe energy and environmental problems, people have turned their attention to the development and utilization of new energy. Among various new energy technologies, photovoltaic power generation is undoubtedly one of the most promising directions. Although traditional silicon-based solar cells have achieved industrialization and have a relatively mature market, their cost performance cannot compete with traditional energy sources, and the pollution and energy consumption issues in the manufacturing process have affected their wide range of applications. Therefore, research and development of high-efficiency, low-cost new solar cells is very necessary. Among the many new types of solar cells, perovskite thin-film solar cells have become a...

Claims

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Application Information

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IPC IPC(8): H01L51/48H01L51/46
CPCH10K71/00H10K30/00H10K2102/00Y02E10/549
Inventor 董兵海胡航王世敏陈凤翔万丽赵丽李静王二静
Owner HUBEI UNIV
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