461 articles
Ion migration (perovskite solar cells)
Ion migration in perovskite solar cells is the movement of ions such as iodide through the soft perovskite lattice, causing current–voltage hysteresis and long-term degradation.
Ionic capacitance in perovskite solar cells
Ionic capacitance in perovskite solar cells is a very large, slow capacitance arising from mobile ions, prominent since 2015 and a key cause of current–voltage hysteresis in measurements.
ISO 9806
ISO 9806, titled Solar energy — Solar thermal collectors — Test methods, is an international standard for testing the durability, reliability, safety, and thermal performance of solar collectors.
ISOS stability protocols
The ISOS stability protocols are consensus procedures for testing the stability of organic and perovskite solar cells, established at a summit in Roskilde, Denmark, in 2010.
ITIC-based organic solar cells
ITIC-based organic solar cells are organic photovoltaic devices using ITIC, a fused-ring non-fullerene acceptor reported in 2015 with a then-record 6.8% efficiency alongside the PTB7-Th donor.
Ivanpah Solar Power Facility
The Ivanpah Solar Power Facility, formally the Ivanpah Solar Electric Generating System, is a concentrating solar thermal power plant in the Mojave Desert of California that opened in 2014.
Jaíba PV Solar Plant
The Jaíba PV Solar Plant is a utility-scale photovoltaic power plant in the municipality of Jaíba, northern Minas Gerais, Brazil, with a listed capacity of 101.6 MW, sold through a federal-auction power purchase agreement until 2041.
JinkoSolar
JinkoSolar (Jinko Solar Co., Ltd.) is a Chinese photovoltaic module manufacturer founded in 2006, vertically integrated from wafers to modules, with more than 10 bases worldwide.
Jolywood
Jolywood is a Chinese photovoltaic manufacturer founded in 2008 in Changshu, Jiangsu, that began with solar module backsheets and expanded into n-type TOPCon cells, listed in Shenzhen since 2014.
Jülich Solar Tower
The Jülich Solar Tower (Solarturmkraftwerk Jülich) is a 1.5 MW experimental concentrating solar power plant in Jülich, Germany, the only solar thermal tower plant in the country.
Kamuthi Solar Power Project
The Kamuthi Solar Power Project is a 648 MW solar photovoltaic power plant at Kamuthi in Tamil Nadu, India, built by the Adani Group and commissioned in 2016.
Kathu Solar Park
Kathu Solar Park is a 100 MW concentrated solar power plant near Kathu in South Africa's Northern Cape, in commercial operation since 2019 with molten salt storage.
Khavda Renewable Energy Park
The Khavda Renewable Energy Park is a planned 30 GW hybrid solar and wind complex under construction in the Rann of Kutch, Gujarat, India, near the Pakistan border.
Kom Ombo Solar Plant
The Kom Ombo Solar Plant is a 200 MW utility-scale photovoltaic power plant in Aswan Governorate, Egypt, built and operated by Saudi company ACWA Power, commercially operational since July 2024.
Koshkonong Solar Park
Koshkonong Solar Park, formally the Koshkonong Solar Energy Center, is a 300-megawatt solar farm with 165 MW of battery storage under construction in Dane County, Wisconsin.
Kostal
Kostal is a German family-owned technology group headquartered in Lüdenscheid, founded by Leopold Kostal in 1912, supplying automotive electrical components and making solar inverters and battery storage systems.
Large Scale Solar 5 (Malaysia)
Large Scale Solar 5 (LSS5), formally LSS PETRA, is the fifth competitive bidding round for utility-scale solar plants in Peninsular Malaysia, launched in 2024 with a 2,000 MW quota.
Large Scale Solar 6 (Malaysia)
Large Scale Solar 6 (LSS6) is Malaysia's sixth competitive solar bidding round, announced in 2026, offering 2,650 MW of solar capacity, half paired with battery storage.
Laser doping
Laser doping is a semiconductor fabrication technique in which a pulsed laser locally melts silicon so dopants diffuse in, chiefly forming selective emitters under metal contacts in solar cells.
Lead-free perovskite solar cell
A lead-free perovskite solar cell is a photovoltaic device using tin, germanium, bismuth, or antimony instead of toxic lead, with tin cells reaching about 18% efficiency.
Lead-free tin halide perovskite solar cells
Lead-free tin halide perovskite solar cells replace lead with tin in the perovskite absorber, reaching efficiencies approaching 18% since the first cell was demonstrated in 2014.
Lead-tin halide perovskite
A lead-tin halide perovskite is a mixed-cation perovskite semiconductor with a narrow bandgap around 1.2 to 1.3 eV, used as the bottom absorber in all-perovskite tandem solar cells.
Lewis acid-base adduct engineering in perovskites
Lewis acid-base adduct engineering in perovskites is a materials-design strategy for perovskite solar cells in which Lewis bases or acids form coordination adducts that passivate defects and control crystallization.
Lewis base passivation of perovskite solar cells
Lewis base passivation of perovskite solar cells is a defect-control strategy in which electron-pair-donating molecules with nitrogen, oxygen, or sulfur donors coordinate undercoordinated Pb2+ defects, reducing recombination and improving efficiency and stability.
Light and elevated temperature-induced degradation
Light and elevated temperature-induced degradation (LeTID) is a defect mechanism in crystalline silicon solar cells that lowers carrier lifetime and power output over months to years.
Light soaking-induced efficiency improvement (photo-brightening) in perovskite solar cells
Light soaking-induced efficiency improvement, or photo-brightening, is the largely reversible rise in efficiency of a perovskite solar cell under prolonged illumination, driven by ion migration and defect passivation.
Light-induced degradation
Light-induced degradation (LID) is a loss of conversion efficiency in crystalline silicon solar cells under illumination, mainly from a boron-oxygen defect, costing up to about 2% efficiency.
Lightsource bp
Lightsource bp is a global independent power producer that develops utility-scale solar, wind, and battery storage projects, founded in London in 2010 and fully acquired by BP in 2024.
Linear Fresnel reflector
A linear Fresnel reflector (LFR) is a concentrating solar power collector in which long, parallel mirror strips reflect sunlight onto a fixed elevated receiver, trading optical efficiency for lower cost.
Linke turbidity factor
The Linke turbidity factor is a broadband measure of atmospheric turbidity, introduced by Linke in 1922, ranging from 1 in clean air to about 8 in polluted air.