A Bi-Functional Lewis Base Additive For Microscopic Homogeneity In Perovskite Solar Cells
- Technology Benefits
- Additives do not need to be removed after crystal growth Remnant additive is advantageous for photovoltaic performance Easily added to solution before further processing 10% increase in PCE compared to no additive
- Technology Application
- Solar cells Optoelectronic devices Radiation detector LEDs Lasers Memory devices
- Detailed Technology Description
- Researchers led by Professor Yang Yang have developed a novel strategy to decrease heterogeneity in perovskite thin films by adding novel Lewis bases. The additives have been shown to improve microscale properties by enhancing crystallinity and decreasing grain boundaries and related defects. The bases can be easily added to the solution before further processing and do not need to be removed after crystal growth. Perovskite devices using this method demonstrated a 10% increase in PCE and the best performing device achieved a PCE of 18.6%.
- Others
-
State Of Development
Devices containing Lewis bases have been fabricated and the optoelectronic properties have been tested. Devices containing Lewis base additives display 10% increase in power conversion efficiency compared to devices without the additives.
Background
Over the last decade, the certified power conversion efficiency (PCE) of perovskite solar cells has increased to 22.1%, establishing perovskites as viable alternatives to the widely used silicon solar cell. Further PCE improvement can be achieved by reducing the microscale heterogeneity of the films, but conventional techniques to improve crystal growth require additional steps or processing time. Therefore, novel scalable and efficient strategies that improve microscale properties will be important to further enhance the photovoltaic properties of perovskite solar cells.
Related Materials
Additional Technologies by these Inventors
- High-throughput Solution Processing of Large Scale Graphene for Device Applications
- Solution-Deposition of CIGS Solar Cell by Spray-Coating
- Three-Terminal Organic Memory Devices
- Bottom Insulating Gate Vertical Organic Transistor
- Rewritable Nano-Surface Organic Electrical Bistable Devices
- Organic Electrical Bistable Devices Fabricated by Solution Processing
- Organic Bistable Device and Organic Memory Cells
- Solution Synthesis and Deposition of Kesterite Copper Zinc Tin Chalcogenide Films
- Polarizing Photovoltaic Device and its Application in Liquid Crystal Displays and Tandem Solar Cells
- 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
- Efficient And Stable Of Perovskite Solar Cells With All Solution Processed Metal Oxide Transporting Layers
Tech ID/UC Case
29353/2018-020-0
Related Cases
2018-020-0
- *Abstract
-
UCLA researchers in the department of Materials Science & Engineering have discovered a novel Lewis base additive that decreases heterogeneity in perovskite thin films.
- *Principal Investigator
-
Name: Jinwook Lee
Department:
Name: Yang Yang
Department:
- Country/Region
- USA
