What are polycrystalline solar panels? PolyCrystalline or MultiCrystalline solar panels are solar panels that consist of several crystals of silicon in a single PV cell. Several fragments of silicon are melted together to form the wafers of polycrystalline solar panels.
Polycrystalline solar panels cost less and have a more simple manufacturing process. Polycrystalline solar panels tend to have a lower heat tolerance. There is less wastage of silicon while manufacturing these panels.
The main difference between the two technologies is the type of silicon Solar Cell used. Monocrystalline solar panels have solar cells made from a single silicon crystal. On the other hand, Polycrystalline solar panels have solar cells made of many pieces of silicon melted together.
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Tsinghua University alumni in the San Francisco Bay Area have grown significantly, with over 10,000 members now actively contributing to Silicon Valley’s innovation ecosystem. As the Chinese economy continues to evolve, it has become an attractive destination for entrepreneurs and professionals who have graduated from top Chinese universities. These individuals, often sharing a common academic background, are working in one of the world’s most dynamic and innovative regions, driving both personal success and commercial opportunities.
Jiang Xuan is just one of many successful Tsinghua alumni who have made their mark in Silicon Valley. Over the years, TAF (Tsinghua Entrepreneurs Fund) has invested heavily in startups, with a total investment of $15 million across 120 projects. Among these, six companies have exited successfully, and seven have achieved valuations exceeding $100 million. One notable example is TrustGo, a mobile security company acquired by Baidu in 2013 for over $30 million. Founded by a Tsinghua engineer, TrustGo was also supported by Aurora Ventures, another Tsinghua-connected firm.
In November 2015, the Silicon Valley Tsinghua Alumni Association launched the “Tsinghua Pilot Mentor Training Program,†aiming to bridge the gap between experienced alumni and young entrepreneurs. The first group of mentors included 26 Tsinghua graduates, many of whom had extensive experience in technology and entrepreneurship.
Zhang Yuqing, a long-time Silicon Valley resident and founding partner of TAF, shared insights into the challenges of starting a business in the region. He recalled that in the early days, securing meetings with investors was a complex process that required careful planning and persistence. However, as the Tsinghua alumni network grew, so did the support system for entrepreneurs.
Founded in 2005, the Tsinghua Entrepreneurs Association (TEEC) became a central hub for alumni in high-tech fields. It later expanded globally, connecting Tsinghua graduates in the U.S., Japan, and beyond. TAF, established in Silicon Valley in 2010, was built on this strong foundation. With backing from the Tsinghua Holdings Fund and other major investors, TAF has played a key role in supporting early-stage startups.
Today, TAF’s team includes industry veterans such as Wang Jinlin (Answers.com), Liu Youzhong (Google), Shao Xuhui (Yahoo), and Ge Hong (Facebook). Their combined expertise has helped TAF make strategic investments in areas like cybersecurity, AI, and smart manufacturing.
As the number of angel funds in Silicon Valley increases, competition has intensified. To stay ahead, many funds are adopting new strategies, such as building “spy†networks within tech giants, forming partnerships with incubators, and collaborating with universities to identify promising startups.
TAF has also been experimenting with fund structures. Unlike traditional models, where profits are distributed based on fixed percentages, TAF now tracks individual contributions in each deal. This approach ensures that those who bring in deals or conduct due diligence are fairly rewarded.
Beyond TAF, other Tsinghua-connected venture capital firms, like Silicon Valley Fengyuan Venture Capital and SVCAngle, are gaining traction. SVCAngle, co-founded by Tsinghua alumnus Kong Dehai, focuses on smart manufacturing and industrial technology. Its current portfolio includes projects in big data, traditional industry intelligence, and storage security.
In China, Tsinghua alumni are highly valued in the entrepreneurial and investment circles. Events like the Tsinghua Economics Entrepreneur Accelerator regularly attract over 50 investment institutions. Being a Tsinghua graduate often opens doors, especially when dealing with other Tsinghua-connected investors.
Zhang Yuqing emphasized the symbiotic relationship between TAF and Tsinghua University. The university's parent fund has supported TAF, while the fund provides resources and returns to the school. This collaboration helps sustain the growing Tsinghua alumni network in Silicon Valley.
With over 400 members, TEEC continues to grow. It includes not only entrepreneurs but also industry leaders and senior executives from global organizations. The association aims to create a concentrated business network, with figures like Deng Feng, founder of Northern Lights Venture Capital, playing a central role.
Deng Feng, a 1981 Tsinghua Radio Department graduate, was instrumental in establishing TEEC and its predecessor, TEG. He also founded the Huayuan Science and Technology Association, which supports entrepreneurs on both sides of the Pacific.
Today, the Silicon Valley Tsinghua Alumni Association, founded in 1994, is the largest regional chapter. Despite managing over 10,000 members, the association remains volunteer-driven, organizing events and sports activities to foster connections.
Through initiatives like the “Tsinghua Pilot Mentor Training Program,†the association helps young alumni build their careers and start businesses. These programs reflect the strong sense of community and shared purpose among Tsinghua graduates.
As more Chinese capital flows into Silicon Valley, the presence of Tsinghua alumni is becoming increasingly influential. While the Indian entrepreneurial community may be more prominent, the Tsinghua network continues to expand, offering unique opportunities for collaboration and growth.
In summary, Tsinghua alumni in Silicon Valley are not just individuals—they represent a powerful and well-connected ecosystem that bridges China and the U.S. Their collective efforts continue to shape the future of innovation and entrepreneurship on a global scale.
How do polycrystalline solar panels work?
They have a square shape and a shining blue hue as they are made up of several polycrystalline silicon. As there are multiple silicon crystals in each cell, polycrystalline panels allow little movement of electrons inside the cells. These solar panels absorb energy from the sun and convert it into electricity.