Surface states of ZnO nanoparticles effect on the performance of inverted-organic solar cells

Wenjing Qin, Xinrui Xu, Dongyue Liu, Chunyu Ma, Liying Yang et al.<br/> ZnO is a promising material used as the electron transport layer in the inverted organic solar cells (IOSCs). However, the electrical or photoelectric properties of ZnO nanoparticles are governed by the surface states of the nanoparticles. Here, we demonstrate that the large number of hydroxyl (-OH) … [J. Renewable Sustainable Energy 5, 053106 (2013)] published Fri Sep 13, 2013.
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Research team developing model for sustainable desert living

Team ASUNM, a collaborative effort between Arizona State University and the University of New Mexico, has come together to address the inefficiencies of urban sprawl and to create a model for sustainable desert living that has been dubbed SHADE, or Solar Home Adapting for Desert Equilibrium, an entry in the Solar Decathlon 2013 competition that takes place October 3–13, in Irvine, Calif.
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Tech startup finds the ticket to growth with old ideas

A brand-new Mexican tech startup is making its products affordable using a centuries-old financing trick that lets startups and their customers shift their risk toward third-party investors.

Even a $15 product is too expensive for many of the world’s poorest customers. Solar companies have made headlines in recent years with myriad solutions to making their products affordable through microloans, from $1 recharge cards to membership models where an entire village buys into a lighting system. But while media outlets drool over solar’s success, other industries in emerging markets, like the tech industry, have found that existing funding models leave them high and dry. Read more

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Transforming solar pumping to eliminate rural poverty

Guest post by Paul Polak, author, “Out of Poverty” and founder of International Development Enterprises

What if we could harness the limitless power of the sun to carry water to the crops of millions of small poor farmers around the world?

If I want to water my petunias, I turn on the tap outside my house, hold my thumb over the end of a battered green hose and water away.

If a small farmer in Ghana or China wants to water a small patch of vegetables he’s growing to sell in the local market, he breaks his back hauling water in two buckets or sprinkling cans from a nearby stream. It takes six hours a day every other day for three months to water a tenth of an acre of vegetables which might sell for $100 at the most. Read more

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Solar Now, Water Later

An estimated 780 million people around the world lack access to clean drinking water and 1.3 billion people are still without access to electricity. Twenty-year-old Eden Full, who has been tinkering with solar technology for more than half of her young life, saw these dual challenges and designed a dual-purpose system that uses mechanical water flow to control the rotation of a solar panel to meet them.

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