HZB booth at Intersolar Europe

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In: Conference, Energymaterials, International, Science Communication

The Intersolar trade fair, held in Munich from June 14th to 16th, served as a global platform for experts, industry leaders, and enthusiasts to explore the latest developments in the solar energy sector. Intersolar is part of “The smarter E,” four different exhibitions, Intersolar, ees, Power2Drive and EM-Power, focusing on renewable energy and highlighting groundbreaking advancements in the field – this year under the motto: “Creating a new energy world”. Helmholtz-Zentrum Berlin (HZB), participates every year to Intersolar and presents its research expertise and technological achievements. The HZB booth at Intersolar Europe 2023 At HZB’s booth this year, we presented the main aspects of ourRead More →

Portrait foto of Mahmoud Hussein

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In: Careers, Diversity, International, PhDlife, Students

Mahmoud Hussein is a PhD candidate at the department for active materials and interfaces for stable perovskite solar cells. In this interview he talks about his experiences working in international teams and how different cultures can contribute to scientific progress by encouraging creative thinking. What is important to you about diversity? The most important aspect in diversity, for me, is having people from different cultures and from different backgrounds – and different science perspectives. That’s very important because this is one of the main driving forces of science. Why? Because when you take people. from different backgrounds, from different educational systems, different academic sub fields,Read More →

Picture: a sample of characterization done by Daniel with lots of patience.

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In: Corona, International, Summerstudents

During my studentship there is one thing I have discovered above all: patience. Patience is the mother of science, as the saying goes. And I have learned it the hard way. My project is a complex one; like most science projects. I’m trying to synthesize and characterize a new material to act as an absorber of light in solar cells. It is called: copper-barium diselenide. More specifically I want this material to be a top-cell absorber in tandem cells. In fact, this synthesis is not easy: little is known about the compound, and barium is very reactive with oxygen, so one must be very carefulRead More →

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In: International, Students, Summerstudents

“Be a diamond. Flourish under pressure” – Maureen Joyce Connolly To most people diamonds are well-known as the marvelous gemstones which used in a piece of jewelry. However, they are not only “a girl’s best friends”. Due to their remarkable physical and optical properties diamonds can be used by scientists and engineers as well! With this blogpost I’ll guide you through my research here at HZB and, hopefully, will share the delight and enjoyment of working with diamonds. Why diamonds? To have a better understanding of diamond it is useful to have a look at its crystalline structure. The strong sp3 covalent bonds between carbonRead More →

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In: Energymaterials, Summerstudents

Far-sighted hydrogen economy During one of the winter nights, while talking in the interior of Granite House, “well lighted with candles, well warmed with coal, after a good dinner”, the settlers of Jules Verne’s Mysterious Island were discussing about the fact that the coal will be entirely consumed. After a roughly estimation, Cyrus Harding, an engineer of great capabilities, concluded that it would happen “for at least two hundred and fifty or three hundred years.” To everyone’s surprise, when he was asked what they will burn instead of coal, he said: “Water”. “Water” cried Pencroft, “water as a fuel for steamers and engines! water toRead More →

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In: Energymaterials, Summerstudents

Have you ever been sitting in company, discussing ridiculous stories about your scars and injuries? Probably, yes. Once, I spent a whole evening talking about these funny cases with my friends. However, the story of the scar I got because of a hot radiator, was outshined by a guy who has gotten a serious burn while he was sleeping with a laptop on his knees. That day I didn’t believe his story, but later I noticed that occasionally my electronic devices heated up incredibly. “Nothing is perfect”, I thought and forgot about this episode for a while. A couple years later, I arrived in aRead More →

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In: International, Students, Summerstudents

If you try to search for “PSO” abbreviation in wiki you may find Pacific Symphony Orchestra or Phase-shift oscillator. However, my project at HZB is about neither music nor electricity, but mathematics. For almost a month here I have been working on an algorithm called Particle Swarm Optimization method and I would like you to have some impression of it.  Optimization Actually, the definition of optimization problem is quite simple. One has a function of n-variables f(x1, …, xn) and seeks to find such values of variables that give minimum to the function. However, the solution is not that simple, because in general you cannotRead More →