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Perovskite solar cell in China Introducing solar cell Solar cell is a device that can directly converts solar energy into electrical energy. A basic structure for a solar cell can be demonstrated in Figure 1. Figure 1. Schematic drawing of a silicon solar cell. Usually, the n-type is made the emitter layer receiving sunlight. When…

“OPTIMISM” what is that? I heard that word first time two days ago. Until I found the word in Oxford English Dictionary. Only I know that. “An optimist finds opportunity in every problem”. Oh? That’s nice. I evaluate myself as a pessimist who finds problems in every opportunity. I don’t know what is right and…

India is the single largest stereotypical representation of a country divided on almost every single parameter that forms a part of demography – be it gender, religion, caste or class. It’s not this division in itself that lends India a unique identity, but it is the politicization of these differences that make our country’s different…

With the ever-expanding globalization and sophisticated transportation networks, the world has become a tighter global village. Human mobility has increased by more than a thousand fold since the 19th century, and the number of people traveling across the world is increasing 10% annually. In addition, economic globalization has helped to increase shipping traffic by more…

EQUALITY AND EMPLOYMENT   Xiaolin Qi   There is no such thing as a true transcendentalism, and therefore there is no true individual.   Society creates humans, and people tend to rely on society. And regardless of how people view their communities, it is what their lives depend on. With such a system, there will…