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Efficient And Stable Of Perovskite Solar Cells With All Solution Processed Metal Oxide Transporting Layers

Technology Benefits

~16% power conversion efficiency60 day stability under normal conditionsMetal oxide charge transport layerSolution processable

Technology Application

Solar cellsOpto-electronic devicesRadiation detectorLEDsLasersMemory devices

Detailed Technology Description

Professor Yang Yang and his research team have developed a unique perovskite solar cell that uses metal oxide films for the charge transport layer. Metal oxides offer the advantage of higher carrier mobility and superior stability than typical organic materials and they can be processed easily via solution. This unique lead halide perovskite solar cell has achieved a ~16% efficiency and improved stability of 60 days under normal operating conditions.

Application No.

20180033983

Others

Background

Lead halide perovskite solar cells offer excellent photovoltaic efficiencies (up to 15%), but both the perovskite material and the charge transport layers have poor stability, where the device degrades within days under normal conditions. Specifically, organic charge transport layers are important for energy level matching and charge transport, but their use is limited because they have poor device stability and are costly to fabricate. The use of inorganic materials to replace the organic transport layers offers a promising avenue to circumvent the disadvantages of these layers for solar cell applications.

Related Materials

J. You, L. Meng, T. B. Song, T. F. Guo, Y. M. Yang, W. H. Chang, Z. Hong, H. Chen, H. Zhou, Q. Chen, Y. Liu, N. D. Marco, & Y. Yang. Improved Air Stability of Perovskite Solar Cells via Solution-Processed Metal Oxide Transport Layers. Nature Nanotechnology. 2015.

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• Solution Synthesis and Deposition of Kesterite Copper Zinc Tin Chalcogenide Films
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• Conjugated Polymers with Selenium Substituted Diketopyrrolopyrrole Unit for Electronics Devices
• Multiple Donor/Acceptor Bulk Heterojunction Solar Cells
• Au Nanoparticles Doped Polyaniline Nanofiber Non-Volatile Memory Device
• Titanium Oxide as the Window Layer for Metal Chalcogenide Photovoltaic Devices
• Novel Polymers For Polymer Solar Cells, Transistors, And Sensors
• Silver Nanowire-Indium Tin Oxide Nanoparticle As A Transparent Conductor For Optoelectronic Devices
• Design Of Semi-Transparent, Transparent, Stacked Or Top-Illuminated Organic Photovoltaic Devices
• Amorphous Silicon And Polymer Hybrid Tandem Photovoltaic Cell
• A Bi-Functional Lewis Base Additive For Microscopic Homogeneity In Perovskite Solar Cells

Tech ID/UC Case

27223/2015-556-0

Related Cases

2015-556-0

*Abstract

UCLA researchers in the Department of Materials Science and Engineering have developed a novel lead halide perovskite solar cell with a metal oxide charge transport layer.

*IP Issue Date

Feb 1, 2018

*Principal Investigator

Name: Lei Meng

Department:

Name: Yang Yang

Department:

Name: Jingbi You

Department:

Country/Region

USA