Perovskite

According to German scientists, the quality of the photoluminescence quantum yield of the perovskite layers can be reliably and precisely determined for the first time. It shows that the promising material has more potential for optimization than previously assumed.

India’s Ministry of New and Renewable Energy is funding research to develop high-efficiency crystalline silicon solar cells, as well as perovskites.

Scientists in Singapore have conducted a review of all existing methods to produce colorful opaque and semitransparent perovskite solar cells for applications in BIPV and urban environments. They identified two general approaches consisting of coloring the perovskites via external or internal modifications.

South Korean researchers claim to have developed a PV cell with a higher efficiency rate than any other tandem cell based on perovskite and organic materials.

Europium ions have been used by Chinese researchers to passivate both the perovskite and electron transport layer (ETL) films of a MAPbI3 perovskite solar cell. As a result, the device’s efficiency was raised by approximately 1.5%. The dual passivation approach also achieved an increase in the cell’s fill factor and open-circuit voltage.

A Russian-Italian research group has developed a two-dimensional transition metal carbide, known as MXenes, to collect photocurrent in perovskite cells. The cells were built with an inverted configuration and are based on a nickel(II) oxide hole transporting layer. The scientists claim that the doping technique allowed them to increase the efficiency of the cell by more than 2%.

Scientists in Spain and Colombia took a closer look at the degradation mechanisms affecting perovskite solar cells, and developed a new, high throughput method to characterize their performance in an outdoor setting. The group evaluated the method through outdoor testing on perovskite modules manufactured in a lab. it expects its findings to offer easier device characterization and better understanding of the degradation mechanisms affecting perovskite solar cells, both important factors in the technology’s development.

International researchers have developed a silicon heterojunction PV cell with textured surfaces to accommodate the perovskite top cell. They optimized the rear transparent electrode to collect as much albedo as possible and achieved five different perovskite bandgaps by altering the iodide-to-bromide ratio in the perovskites, resulting in a higher open-circuit voltage.

Australian scientists have built a perovskite solar cell based on 2D and 3D salts. By adding a fluorinated lead salt in the processing solution – normally used to form 3D methylammonium lead iodide – they were able to achieve a 21.1% efficiency, an open-circuit voltage of 1.12 V, a short-circuit current of 22.4 mA/cm2, and a fill factor of 84%.

Italian researchers have engineered a hole extraction layer with water-splitting additives to reduce the impact of moisture in perovskite PV devices. They claim that the method ensured a power conversion efficiency of more than 9% in perovskite cells stored for a month in a water-saturated atmosphere.