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perovskite News
Hybrid Perovskite Material Could Be Key to Making Organic Diode Lasers
STATE COLLEGE, Pa., Dec. 5, 2017 — Researchers are closer to creating a tunable semiconductor diode laser from hybrid organic-inorganic perovskites. Using a material composed of an inorganic perovskite sublattice with relatively big organic molecules confined in the middle, a Penn State research team demonstrated that optically pumped continuous-wave lasing could be sustained for over an hour. The next big step for this team is to switch from optical pumping with an external laser to a perovskite laser diode that can be
Microfluidic Platform Performs Screens of Perovskite Nanocrystals
RALEIGH, N.C., Nov. 8, 2017 — ; An automated microfluidic technology has been developed containing a spectrographic monitoring module that collects both fluorescent and absorption data. The module can move along the microfluidic channel, collecting data along the way. The...
Light, Oxygen and Moisture Combine to Mend Defects in Industrial Perovskite Films
CAMBRIDGE, England, Sept. 28, 2017 — Exposure to light combined with exposure to humidity and oxygen has been shown to permanently correct defects in the molecular structure of perovskites, resulting in minimal non-radiative losses and properties approaching those of perovskite single...
Ultrapure Green Light from Perovskite Could Enrich Next-Gen Displays
ZURICH, Sept. 7, 2017 — An ultra-thin LED, as bendable as a sheet of paper and able to emit pure green light, has been developed using nanomaterials and simple room-temperature processes. Until now high-temperature processes have been required to produce pure light using...
Perovskite Stability Could be Improved by Atomic-Scale Redesign
LONDON, May 19, 2017 — The mechanism that causes solar cells made with organic lead halide perovskites to rapidly deteriorate when exposed to oxygen and light has been discovered, and could provide the basis for solving issues related to long-term stability of perovskite...
Novel Crystal Structure Could Be Used to Build LEDs, Lasers
TALLAHASEE, Fla., Feb. 2, 2017 — The discovery of a one-dimensional crystal structure that is highly photo luminescent could help facilitate the development of novel applications for optoelectronic devices such as LEDs, photovoltaic cells and lasers. The crystal is an...
Self-Assembling Particles Could Produce Lower Cost LEDs
PRINCETON, N.J., Jan. 19, 2017 — Self-assembling nanoscale perovskite — crystalline substances — particles could be a more efficient and lower-cost alternative material for LEDs.
2D Perovskite Opens Horizons for Photovoltaics, Optoelectronics
LOS ALAMOS, N.M., Aug. 25, 2016 — A 2D layered perovskite with crystalline properties has demonstrated more than triple the efficiency of previous 2D perovskites, while also demonstrating significantly more stability than 3D perovskite material. The technology shows promise not only...
Pressure Tunes Absorption Properties of Perovskite Solar Cells
STANFORD, Calif., April 29, 2016 — The voltage and electronic conductivity of perovskite solar cells have been shown to increase under high pressure. The findings suggest that either chemical or mechanical compression could enable tunable perovskites solar cells capable of absorbing...
Correlated Metal Films Eyed for Affordable Displays
UNIVERSITY PARK, Pa., Dec. 16, 2015 — A highly transparent and electrically conductive metal thin film holds promise as an alternative to indium tin oxide (ITO) in displays, windows, touch screens and solar cells. ITO is a transparent conductor used in more than 90 percent of the...
QDs, Perovskites Team Up in Superefficient IR LEDs
TORONTO, July 16, 2015 — Getting the crystalline structures of quantum dots and perovskites to align could yield high-efficiency LEDs. Emitting in the IR region, these hybrid materials could have applications in night-vision and gesture-recognition technology, biomedical...
Perovskite Nanowires Yield Efficient, Tunable Lasers
MADISON, Wis., April 13, 2015 — A “freshman-chemistry-level” technique for growing nanowires produces tunable lasers that are nearly 100 percent efficient. With low lasing thresholds and Q factors around 3600, these single-crystal lead halide perovskite nanowires could...
Pairing of Silicon, Perovskite Promising for Solar Efficiency
CAMBRIDGE, Mass., March 24, 2015 — A pairing of silicon and perovskite has the potential to achieve significantly higher solar energy conversion efficiencies than standard, single-junction silicon cells. A prototype tandem solar cell developed by researchers at MIT and Stanford...
Hybrid ‘Wonder Material’ Creates Efficient LEDs
CAMBRIDGE, England, OXFORD, England, and MUNICH, Aug. 7, 2014 — A new type of perovskite — touted as a “wonder material” — has been used to create a new type of LED that has the potential to create more efficient light sources than those that rely on conventional solar cells. A team from...
Tin Replaces Lead in Promising Solar Cell
EVANSTON, Ill., May 12, 2014 — A new solar cell promises enhanced efficiency and a smaller environmental footprint. The new cell, developed by a team from Northwestern University, uses a perovskite structure composed of tin instead of the traditional lead as the light-absorbing...
Perovskite-Based Solar Cells Gaining in Efficiency
GOLDEN, Colo., April 29, 2014 — Perovskites are showing promise as materials for a new generation of highly efficient, low-cost solar cells. A team from the US Energy Department’s National Renewable Energy Laboratory (NREL) is studying the perovskite (CH3NH3)PbI3 to...
Solar Cell by Day, Light Panel by Night
SINGAPORE, March 25, 2014 — A chance discovery has brought light emission properties to solar cells. A new solar cell material developed by a team at Nanyang Technological University (NTU) not only converts light to electricity, but also emits light. The hybrid perovskite...
Ultrathin PV Device is Highly Efficient
VALENCIA, Spain, & LAUSANNE, Switzerland, Dec. 30, 2013 — A thin film of perovskite sandwiched between two very thin organic semiconductors makes for a photovoltaic device with high power conversion efficiency, researchers have discovered. The thin-film photovoltaic device. A group led by Hendrik Bolink of...
Simplified Superlens Captures IR Light
BERKELEY, Calif., March 31, 2011 — Superlenses fabricated from perovskite oxides are simpler and easier to fabricate than metamaterials and are ideal for capturing light in the mid-infrared range, potentially opening the door to highly sensitive biomedical detection and imaging, say...
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