Upgrading a perovskite element with a heat-resistant organic layer. Free Technical Library News

NEWS OF SCIENCE AND TECHNOLOGY, NOVELTY IN ELECTRONICS
Free technical library / timeline

Upgrading a perovskite cell with a heat-resistant organic layer

23.03.2024

A team of scientists from KAUST University in Saudi Arabia has made significant progress in the field of perovskite photovoltaic technology by creating a new monolayer of molecules with phosphonic acid as an organic layer for electron transport. This innovative approach is becoming key for future flexible perovskite solar cells due to its high efficiency and thermal stability.

Using non-fullerene semiconductors based on anthraquinone (AQ) and naphthalene diimide (NDI) molecules, the scientists created a layer that forms covalent bonds with the indium tin oxide surface, enabling efficient interaction with the perovskite material. Thermogravimetric analysis showed that these modified molecules have high thermal stability, retaining 95% of their mass at high temperatures, reaching 356°C for AQ and 268°C for NDI.

The solar cell, created on a glass substrate, has a complex structure including a Spiro-OMeTAD hole transport layer, a molybdenum oxide layer and silver contacts. Under standard lighting, the cell achieves a high power conversion efficiency of 21,5%, setting a new standard for perovskite photovoltaic cells with organic layers for electron transport.

In addition, the device has excellent electrical characteristics: open circuit voltage is 1,13 V, short circuit current density is 24,7 mA/cm2, and duty cycle is 77%. Interestingly, the cell stability remains at 90% of initial performance even after 1 hours of operation at 000°C.

The achievement is part of a global effort to improve solar technology, highlighted by recent developments in South Korea, including a black perovskite photovoltaic cell with a record solar energy conversion efficiency of 12,7% for flexible quantum dot cells.

<< Back: Emo robot smiles at the same time as a human 23.03.2024

>> Forward: Specific humor of Internet trolls 22.03.2024

Latest news of science and technology, new electronics:

The existence of an entropy rule for quantum entanglement has been proven 09.05.2024

Quantum mechanics continues to amaze us with its mysterious phenomena and unexpected discoveries. Recently, Bartosz Regula from the RIKEN Center for Quantum Computing and Ludovico Lamy from the University of Amsterdam presented a new discovery that concerns quantum entanglement and its relation to entropy. Quantum entanglement plays an important role in modern quantum information science and technology. However, the complexity of its structure makes understanding and managing it challenging. Regulus and Lamy's discovery shows that quantum entanglement follows an entropy rule similar to that for classical systems. This discovery opens new perspectives in the field of quantum information science and technology, deepening our understanding of quantum entanglement and its connection to thermodynamics. The results of the study indicate the possibility of reversibility of entanglement transformations, which could greatly simplify their use in various quantum technologies. Opening a new rule ... >>

Mini air conditioner Sony Reon Pocket 5 09.05.2024

Summer is a time for relaxation and travel, but often the heat can turn this time into an unbearable torment. Meet a new product from Sony - the Reon Pocket 5 mini-air conditioner, which promises to make summer more comfortable for its users. Sony has introduced a unique device - the Reon Pocket 5 mini-conditioner, which provides body cooling on hot days. With it, users can enjoy coolness anytime, anywhere by simply wearing it around their neck. This mini air conditioner is equipped with automatic adjustment of operating modes, as well as temperature and humidity sensors. Thanks to innovative technologies, Reon Pocket 5 adjusts its operation depending on the user's activity and environmental conditions. Users can easily adjust the temperature using a dedicated mobile app connected via Bluetooth. Additionally, specially designed T-shirts and shorts are available for convenience, to which a mini air conditioner can be attached. The device can oh ... >>

Energy from space for Starship 08.05.2024

Producing solar energy in space is becoming more feasible with the advent of new technologies and the development of space programs. The head of the startup Virtus Solis shared his vision of using SpaceX's Starship to create orbital power plants capable of powering the Earth. Startup Virtus Solis has unveiled an ambitious project to create orbital power plants using SpaceX's Starship. This idea could significantly change the field of solar energy production, making it more accessible and cheaper. The core of the startup's plan is to reduce the cost of launching satellites into space using Starship. This technological breakthrough is expected to make solar energy production in space more competitive with traditional energy sources. Virtual Solis plans to build large photovoltaic panels in orbit, using Starship to deliver the necessary equipment. However, one of the key challenges ... >>

New method for creating powerful batteries 08.05.2024

With the development of technology and the expanding use of electronics, the issue of creating efficient and safe energy sources is becoming increasingly urgent. Researchers at the University of Queensland have unveiled a new approach to creating high-power zinc-based batteries that could change the landscape of the energy industry. One of the main problems with traditional water-based rechargeable batteries was their low voltage, which limited their use in modern devices. But thanks to a new method developed by scientists, this drawback has been successfully overcome. As part of their research, scientists turned to a special organic compound - catechol. It turned out to be an important component that can improve battery stability and increase its efficiency. This approach has led to a significant increase in the voltage of zinc-ion batteries, making them more competitive. According to scientists, such batteries have several advantages. They have b ... >>

Alcohol content of warm beer 07.05.2024

Beer, as one of the most common alcoholic drinks, has its own unique taste, which can change depending on the temperature of consumption. A new study by an international team of scientists has found that beer temperature has a significant impact on the perception of alcoholic taste. The study, led by materials scientist Lei Jiang, found that at different temperatures, ethanol and water molecules form different types of clusters, which affects the perception of alcoholic taste. At low temperatures, more pyramid-like clusters form, which reduces the pungency of the "ethanol" taste and makes the drink taste less alcoholic. On the contrary, as the temperature increases, the clusters become more chain-like, resulting in a more pronounced alcoholic taste. This explains why the taste of some alcoholic drinks, such as baijiu, can change depending on temperature. The data obtained opens up new prospects for beverage manufacturers, ... >>

Random news from the Archive

360-degree video broadcast 04.02.2014

Japan's largest telecommunications company Nippon Telegraph and Telephone (NTT) and Dwango are designing an innovative video broadcasting system that will allow viewers to view the stage from various positions and angles.

The platform includes a special array of cameras providing a 360-degree field of view. The signal is transmitted to the viewer's wearable display: currently existing video glasses are used, but in the future a custom device can be developed.

NTT and Dwango emphasize that the platform uses special broadcast technologies that provide "optimized video and audio quality."

The system allows a viewer wearing computerized glasses or a helmet to change the viewpoint of the stage by turning their head - as if they were actually present in a concert hall or sports arena.

Moreover, theoretically, the new platform will make it possible to view video broadcasts with 360-degree coverage for both mobile and stationary users. In the first case, the system will provide maximum stability of signal reception, and in the second case, it will also provide the best quality.

In the near future, the project participants intend to conduct a comprehensive testing of the platform and evaluate its effectiveness. After that, a decision will be made on further development.

See full Archive of science and technology news, new electronics

All languages of this page

Home page | Library | Articles | Website map | Site Reviews