Home > Press > Skoltech researchers developed new perovskite-inspired semiconductors for electronic devices
The research was showcased on the journal's cover page. CREDIT Journal of Materials Chemistry A |
Abstract:
The collaborative effort of researchers from Skoltech, SB RAS Nikolaev Institute of Inorganic Chemistry, and RAS Institute for Problems of Chemical Physics translated into the development of advanced lead-free semiconductors for solar cells, based on complex antimony and bismuth halides. The results of their study were published in the Journal of Materials Chemistry A and showcased on the journal's cover page.
The solar cells based on complex lead halides with a perovskite-type structure are coming into sharp focus thanks to their low cost, ease of manufacturing and enhanced light-conversion efficiency of >24%. However, their mass production and wider use are hampered by toxicity and low stability of complex lead halides. To overcome these obstacles, researchers worldwide are working on designing alternative lead-free photoactive materials, particularly, based on bismuth and antimony halides. So far these solar cells have displayed poor light-conversion performance, which suggests that the charge carriers are not generated efficiently enough in the photoactive layer or have difficulty reaching the electrodes.
The team of researchers from Skoltech, SB RAS Nikolaev Institute of Inorganic Chemistry, and RAS Institute for Problems of Chemical Physics showed that the actual reason behind this is the non-optimal structure of the bismuth and antimony compounds.
"We found out that unhindered vertical transport of holes and electrons, which is essential for efficient operation of solar cells, is prevented by the low dimensionality of the anionic sublattice in these compounds, which is typically 0D and sometimes 1D or very rarely 2-D. As a consequence, this class of materials can work efficiently in lateral photodetectors but not in solar cells," explains professor Pavel Troshin of the Skoltech Center for Energy Science and Technology.
Earlier, the same team suggested increasing the lattice dimensionality in bismuth and antimony complexes by introducing linker molecules, such as molecular iodine. Using this approach, which was presented in Chemistry: A European Journal, the scientists have succeeded in creating new semiconductor materials based on complex halides of bismuth and antimony with iodine, which are currently the subject of intensive research worldwide.
The same team has also designed a fundamentally new family of solar cell materials based on the perovskite-like complex antimony bromides, ASbBr6(where A is a positively charged organic ion). The ASbBr6-based solar cells have exhibited record-high light-conversion efficiency for antimony and bismuth halides. The results of this study were published in the journal Advanced Energy Materials. According to the project lead Pavel Troshin, a real breakthrough in their research came with this study, which opens up new horizons in the development of new semiconductor materials for perovskite electronics.
###
This study was made available online in December 2018 ahead of final publication in print in March 2019.
####
For more information, please click here
Contacts:
Alina Chernova
7-905-565-3633
Copyright © Skolkovo Institute of Science and Technology (Skoltech)
If you have a comment, please Contact us.Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.
Related Links |
Related News Press |
News and information
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Good as gold - improving infectious disease testing with gold nanoparticles April 5th, 2024
Perovskites
Chemical reactions can scramble quantum information as well as black holes April 5th, 2024
Shedding light on unique conduction mechanisms in a new type of perovskite oxide November 17th, 2023
Inverted perovskite solar cell breaks 25% efficiency record: Researchers improve cell efficiency using a combination of molecules to address different November 17th, 2023
Possible Futures
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
With VECSELs towards the quantum internet Fraunhofer: IAF achieves record output power with VECSEL for quantum frequency converters April 5th, 2024
Chip Technology
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024
HKUST researchers develop new integration technique for efficient coupling of III-V and silicon February 16th, 2024
Discoveries
Chemical reactions can scramble quantum information as well as black holes April 5th, 2024
New micromaterial releases nanoparticles that selectively destroy cancer cells April 5th, 2024
Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024
Announcements
NRL charters Navy’s quantum inertial navigation path to reduce drift April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters
Simulating magnetization in a Heisenberg quantum spin chain April 5th, 2024
Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024
Energy
Development of zinc oxide nanopagoda array photoelectrode: photoelectrochemical water-splitting hydrogen production January 12th, 2024
Shedding light on unique conduction mechanisms in a new type of perovskite oxide November 17th, 2023
Inverted perovskite solar cell breaks 25% efficiency record: Researchers improve cell efficiency using a combination of molecules to address different November 17th, 2023
The efficient perovskite cells with a structured anti-reflective layer – another step towards commercialization on a wider scale October 6th, 2023
Solar/Photovoltaic
Development of zinc oxide nanopagoda array photoelectrode: photoelectrochemical water-splitting hydrogen production January 12th, 2024
Shedding light on unique conduction mechanisms in a new type of perovskite oxide November 17th, 2023
Inverted perovskite solar cell breaks 25% efficiency record: Researchers improve cell efficiency using a combination of molecules to address different November 17th, 2023
Charged “molecular beasts” the basis for new compounds: Researchers at Leipzig University use “aggressive” fragments of molecular ions for chemical synthesis November 3rd, 2023
The latest news from around the world, FREE | ||
Premium Products | ||
Only the news you want to read!
Learn More |
||
Full-service, expert consulting
Learn More |
||