PRESS-NEWS.org - Press Release Distribution
PRESS RELEASES DISTRIBUTION

Perovskite solar cells from the slot die coater - a step towards industrial production

Eva Unger's team investigated at BESSY II how precursor inks influence the quality of perovskite thin films. The best cells were scaled up to minimodule size.

Perovskite solar cells from the slot die coater - a step towards industrial production
2023-03-16
(Press-News.org) Metal halide perovskites are considered to be a particularly low-cost and promising class of materials for next-generation solar modules. Perovskite solar cells can be produced with coating processes using liquid inks made from precursor materials and various solvents. After coating, the solvents evaporate and the perovskites crystallise to form a more or less homogeneous layer.

Options for upscaling Prof. Dr. Eva Unger's team at Helmholtz-Zentrum Berlin has extensive expertise in solution-based processing methods and is investigating options for upscaling. "Perovskite photovoltaics is the best solution-processable PV technology available," says Eva Unger, "but we are only just beginning to understand how the complex interaction of the solvent components affects the quality of the perovskite layers."

Variations of viscosity This is because when the halide perovskite layers are coated on large surfaces, unwanted inhomogeneities can occur, for example so-called ribbing structures. "By varying the viscosity of the ink, such effects can be minimised," says Jinzhao Li, who is doing his PhD with Unger. At BESSY II, he has investigated how different solvent combinations affect the crystallisation of the perovskite films. The best p-i-n-FAPbI3 perovskite solar cells thus achieve a certified efficiency of 22.3 % on a laboratory scale. Jinzhao Li also produced mini solar modules (active area of 12.6 cm2) with colleagues from the HySPRINT innovation lab and PVcomB, which achieved efficiencies of around 17 %.

Outdoor test for one year Dr Carolin Ulbrich's team tested the optimised solar cells at PVcomB’s outdoor test facility for a whole year: In the process, the efficiency remained almost stable in winter and spring, and only dropped in the warmer summer months. "These tests of larger modules under real conditions give us valuable information on degradation mechanisms to then further improve the long-term stability of halide perovskite photovoltaics," says Eva Unger.

END

[Attachments] See images for this press release:
Perovskite solar cells from the slot die coater - a step towards industrial production Perovskite solar cells from the slot die coater - a step towards industrial production 2

ELSE PRESS RELEASES FROM THIS DATE:

Researchers highlight nucleolar DNA damage response in fight against cancer

Researchers highlight nucleolar DNA damage response in fight against cancer
2023-03-16
Cancer, which affects millions every year, requires proteins to spread through the body. In a new strategy to beat the wide-ranging disease, scientists are sabotaging its protein factories.  In a new forum paper published in Trends in Biology, researchers from the University of North Carolina at Charlotte encapsulated the young field of nucleolar DNA damage response (DDR) pathways. The review highlights six mechanisms by which cells repair DNA damage, including one which was published five months ago in Nucleic Acids Research by the same authors. By attacking these mechanisms, future applied researchers will be able to ...

Food security: New tool can forecast food insecurity up to 30 days in advance

2023-03-16
A new tool that can be used to forecast the prevalence of individuals within a country that may have insufficient access to food — known as food insecurity — up to 30 days into the future is presented in a study published in Scientific Reports. The authors suggest that the tool could aid decision makers in countries at risk of food insecurity and help facilitate more timely responses. Elisa Omodei and colleagues developed the tool using food consumption data from Burkina Faso, Cameroon, Mali, Nigeria, Syria and Yemen — all countries that have recently ...

Study of immune ‘neighborhoods’ highlights macrophages as key players in invasive breast cancers

Study of immune ‘neighborhoods’ highlights macrophages as key players in invasive breast cancers
2023-03-16
Most immunotherapies, which aim to boost T cell activity, work poorly in treating estrogen receptor-positive (ER+) breast cancer. Targeting a different type of immune cell called macrophages could be a more effective approach, suggests a comprehensive new analysis of invasive ER+ breast cancers led by University of Pittsburgh School of Medicine scientists. Published today in Nature Cancer, the study found that macrophages were the dominant immune cell infiltrating ER+ invasive lobular carcinoma (ILC) and invasive ductal carcinoma ...

Genetic causes of three previously unexplained rare diseases identified

Genetic causes of three previously unexplained rare diseases identified
2023-03-16
New York, NY (March 16, 2023) – Using a new computational approach they developed to analyze large genetic datasets from rare disease cohorts, researchers at the Icahn School of Medicine at Mount Sinai and colleagues have discovered previously unknown genetic causes of three rare conditions: primary lymphedema (characterized by tissue swelling), thoracic aortic aneurysm disease, and congenital deafness. The work was done in collaboration with colleagues at the University of Bristol, UK; KU Leuven, Belgium; the University of Tokyo; the University of Maryland; Imperial College London, and others from around the world. An enhanced understanding of the functions ...

NYU Abu Dhabi researchers discover a new approach to harvesting aerial humidity with organic crystals

NYU Abu Dhabi researchers discover a new approach to harvesting aerial humidity with organic crystals
2023-03-16
Fast facts: The global shortage of fresh water currently affects hundreds of millions of people around the world, and it is estimated that by 2025, 1.8 billion people will experience severe water scarcity and hunger due to loss of fertile farming lands caused by droughts. The discovery of alternative water-harvesting technologies holds the potential to alleviate the foreseeable socioeconomic impacts of severe water scarcity. Abu Dhabi, UAE, March 16 2023: Researchers of the Smart Materials Lab (SML) and the Center for Smart Engineering Materials (CSEM) at NYU Abu Dhabi (NYUAD) have reported a novel method of harvesting water from ...

Dual immunotherapy plus chemotherapy before surgery improves patient outcomes in operable lung cancer

Dual immunotherapy plus chemotherapy before surgery improves patient outcomes in operable lung cancer
2023-03-16
HOUSTON ― In a Phase II trial led by researchers from The University of Texas MD Anderson Cancer Center, adding ipilimumab to a neoadjuvant, or pre-surgical, combination of nivolumab plus platinum-based chemotherapy, resulted in a major pathologic response (MPR) in half of all treated patients with early-stage, resectable non-small cell lung cancer (NSCLC). New findings from the NEOSTAR trial, published today in Nature Medicine, provide further support for neoadjuvant immunotherapy-based treatment as an approach to reduce viable tumor at surgery and to improve outcomes in NSCLC. The combination also was associated with an increase in immune cell infiltration and a favorable gut microbiome ...

How fishermen benefit from reversing evolution of cod

How fishermen benefit from reversing evolution of cod
2023-03-16
Leipzig. Intense fishing and overexploitation have led to evolutionary changes in fish stocks like cod, reducing both their productivity and value on the market. These changes can be reversed by more sustainable and far-sighted fisheries management. The new study by researchers from the German Centre for Integrative Biodiversity Research (iDiv), Leipzig University and the Institute of Marine Research in Tromsø, which was published in Nature Sustainability, shows that reversal of evolutionary change would only slightly reduce the profit of fishing, but would help regain and conserve natural genetic diversity. The impact of global fisheries on marine ecosystems ...

Displays with more brilliant colors through a fundamental physical concept

2023-03-16
A research team from the University of Cologne (Germany) and the University of St Andrews (Scotland) has shown in a new study how a fundamental physical concept can be used to boost the colour brilliance of smartphone, computer or TV screens without cutbacks in energy efficiency. The results have been published in Nature Photonics. Organic light-emitting diodes (OLEDs) have conquered the market for displays in recent years – from high-resolution smartphone to wall-sized television screens. However, industry and science face several challenges in creating the next generation of devices ...

Hot topic – how heat flow affects the Earth’s magnetic field

2023-03-16
Hot topic – how heat flow affects the Earth’s magnetic field  Compass readings that do not show the direction of true north and interference with the operations of satellites are a few of the problems caused by peculiarities of the Earth’s magnetic field.  The magnetic field radiates around the world and far into space, but it is set by processes that happen deep within the Earth’s core, where temperatures exceed 5,000-degress C.  New research from geophysicists at the University of Leeds suggests that ...

Case report of first mixed race woman possibly cured of HIV published in Cell

2023-03-16
A new method to cure HIV—by transplanting HIV-resistant stem cells from umbilical cord blood—has yielded long-term successful results, say scientists. The approach was successfully used to treat the “New York patient,” a middle-aged woman with leukemia and HIV who self-identifies as mixed race, who has been without HIV since 2017. Using stem cells from cord blood rather than from compatible adult donors, as has been done previously, increases the potential to cure HIV via stem cell transplantation ...

LAST 30 PRESS RELEASES:

Breathable yet protective: Next-gen medical textiles with micro/nano networks

Frequency-engineered MXene supercapacitors enable efficient pulse charging in TENG–SC hybrid systems

Developed an AI-based classification system for facial pigmented lesions

Achieving 20% efficiency in halogen-free organic solar cells via isomeric additive-mediated sequential processing

New book Terraglossia reclaims language, Country and culture

The most effective diabetes drugs don't reach enough patients yet

Breast cancer risk in younger women may be influenced by hormone therapy

Strategies for staying smoke-free after rehab

Commentary questions the potential benefit of levothyroxine treatment of mild hypothyroidism during pregnancy

Study projects over 14 million preventable deaths by 2030 if USAID defunding continues

New study reveals 33% gap in transplant access for UK’s poorest children

Dysregulated epigenetic memory in early embryos offers new clues to the inheritance of polycystic ovary syndrome (PCOS)

IVF and IUI pregnancy rates remain stable across Europe, despite an increasing uptake of single embryo transfer

It takes a village: Chimpanzee babies do better when their moms have social connections

From lab to market: how renewable polymers could transform medicine

Striking increase in obesity observed among youth between 2011 and 2023

No evidence that medications trigger microscopic colitis in older adults

NYUAD researchers find link between brain growth and mental health disorders

Aging-related inflammation is not universal across human populations, new study finds

University of Oregon to create national children’s mental health center with $11 million federal grant

Rare achievement: UTA undergrad publishes research

Fact or fiction? The ADHD info dilemma

Genetic ancestry linked to risk of severe dengue

Genomes reveal the Norwegian lemming as one of the youngest mammal species

Early birds get the burn: Monash study finds early bedtimes associated with more physical activity

Groundbreaking analysis provides day-by-day insight into prehistoric plankton’s capacity for change

Southern Ocean saltier, hotter and losing ice fast as decades-long trend unexpectedly reverses

Human fishing reshaped Caribbean reef food webs, 7000-year old exposed fossilized reefs reveal

Killer whales, kind gestures: Orcas offer food to humans in the wild

Hurricane ecology research reveals critical vulnerabilities of coastal ecosystems

[Press-News.org] Perovskite solar cells from the slot die coater - a step towards industrial production
Eva Unger's team investigated at BESSY II how precursor inks influence the quality of perovskite thin films. The best cells were scaled up to minimodule size.