Pan Jingong , Doctor of New Jersey University of Technology, Professor-level Senior Engineer, Founder of Cadmium Telluride Materials Research Center of New Jersey University of Technology, Expert of "Tianfu Emei Plan" in Sichuan Province, Expert of "Rongpiao Plan" in Chengdu City, Specially Appointed Expert of National Federation of Returned Overseas Chinese, Leader of Top Innovation Team in Sichuan Province, He is currently the general manager of Chengdu CNBM Photoelectric Materials Co., Ltd.
of Architecture Cadmium telluride (CdTe) power generation glass is a new type of green building material which grows CdTe photoelectric material on ordinary glass and changes ordinary glass from insulator to power generation. Unlike traditional photovoltaic products, cadmium telluride power generation glass can be directly used as a building material and become a part of the building, truly realizing the transformation of the building from an "energy consumption center" to a "productivity center". It is highly expected because of its outstanding advantages:
strong ability to absorb light. Absorbs 94% of visible light, can generate electricity even in cloudy days, rainy days, early mornings, dusks and other weak light conditions, can solve the problem of light pollution of the glass curtain wall, and
has high photoelectric conversion efficiency. The theoretical photoelectric conversion efficiency of the cadmium telluride thin film solar cell is about 33%,
the temperature coefficient is low, and the high-temperature loss is minimum. Its temperature coefficient is about half lower than that of traditional solar cells, so it is more adaptable to harsh application environments such as high temperature, desert and humid areas;
its price is affordable. Because the thickness of the power generation film layer material is only 2 microns, the manufacturing cost is low, and the large-scale application is facilitated. And that
safety performance is high. Cad mium telluride is a stable compound that does not release cadmium under normal use and can be used safely. And that cadmium telluride pow generation glass passes a fire rate (Class a) test. Cad
mium telluride power generation glass products are known as "oil fields hanging on the wall". As a new building material, it realizes the customization of color, pattern, size, transmittance and adjustable transmittance, which provides a broader choice for architectural design and meets the "low-carbon aesthetics" needs of modern architecture.
With its excellent functional advantages, cadmium telluride power generation glass is very suitable for distributed, component-based and integrated green buildings, so it is favored by the BIPV market. Especially in recent years, under the background of double carbon, the proportion and requirements of green buildings are getting higher and higher, and the application of cadmium telluride power generation glass has been paid more and more attention.
In the exchange, Pan Jingong believes that if the value of buildings in the past few hundred years has been limited to the functionality of sheltering from the wind and rain, then in the next 100 years, BIPV is an organic combination of photoelectric materials and building materials, and buildings will be endowed with new values: "It should be green and low-carbon, and it should also be energy-saving and productive." It will even have financial attributes, which is a big change, and cadmium telluride power glass is one of the most promising BIPV materials at present, which will empower the new "value" of buildings.
In 2010, Pan Jingong returned to China to start his own business and devoted himself to the research and development and industrialization of large area cadmium telluride power generation glass.
In 2013, under the strategic guidance of Kaisheng Group, Chengdu China Building Materials under the leadership of Pan Jingong gradually began to complete the integration of upstream and downstream industrial chains of photoelectric materials, including the key links of tellurium-containing bismuth ore processing, hydrometallurgical processing, purification of high-purity rare metal materials and preparation of compound semiconductors. The stable supply of the tellurium raw material is ensured. During
this period, the US government delegation went to the company three times to lobby Pan Jingong to go to the United States. The company also experienced a series of difficulties, such as bank loan withdrawal, suspension of mine development, closure of company accounts and loss of personnel. "At the most difficult time, there were only 29 employees left in the company with more than 300 employees." Pan Jingong sighed with emotion, "The process is really too difficult."
But in the end, Pan Jingong and his team's persistence finally ushered in the harvest period.
In 2016, Chengdu Cadmium Telluride Power Generation Glass Project was supported
by the National Development and Reform Commission's "Major Project to Enhance the Core Competitiveness of the National Manufacturing Industry". CNBM Chengdu finally succeeded in producing the world's first large-area cadmium telluride power generation glass (1)
In 2018, CNBM Chengdu's large-area cadmium telluride power generation glass production line was officially put into operation in Shuangliu, Chengdu, making China first country to independently own large-area cadmium telluride power generation glass, and the products were supplied to the market in batches and profitable in the same year.
In 2019, the technical theory of Chengdu CNBM Cadmium Telluride Power Generation Glass won the Edison Invention Award, the First Prize of Technical Invention of China Building Material Federation, and the New Material Award of the 21st International Industrial Exposition; it was selected into the Guiding Catalogue of the First Batch of Application Demonstration of Key New Materials issued by the Ministry of Industry and Information Technology;
In 2020, the project won the title of "China's Good Technology" and was selected into the Green Technology Promotion Catalogue of the National Development and Reform Commission.
In 2021, the conversion efficiency of the production line of the project reached 16.
In 2022, the conversion efficiency of the laboratory reached 20.
In March this year, Chengdu China Building Materials Cadmium Telluride Power Generation Glass Project won the "Seventh China Industry Award".
is that preparation of the semiconductor alloy: the vapor pressure is high dure the preparation of the cadmium telluride alloy, The product segregation is serious and it is very easy to explode.
The third is the development of coating process: it is difficult to control the temperature field when coating on a large area of substrate glass, and the substrate deformation caused by gravity and high temperature coupling can not achieve uniform coating.
The fourth is the design of complete equipment: in the process of dynamic continuous coating, there are defects inside the film and between the interfaces of different films, which makes it difficult to achieve stable mass production. The continuous achievements of
technology and projects can bring the joy of breakthroughs to the team, but what really makes Pan Jingong and his team happy and proud is that the technology products are constantly applied to various scenarios in reality and help all kinds of people, "I hope our product can benefit everyone and the nation." It is what our people who do technology research and development are most looking forward to!
In recent years, with the cross-border integration of photovoltaic power generation and buildings and the frequent innovation of modes, the scene of BIPV has become increasingly diversified. The future market size of BIPV is expected to reach 1.7-3. Taking advantage of the "east wind" of BIPV, cadmium telluride power generation glass also has a good prospect.
However, although cadmium telluride power generation glass has been developed for many years abroad, it is still a new thing in China and has not been generally accepted by the market. Continuous improvement of conversion efficiency and promotion of more scenarios will be the key problems to be solved in the current cadmium telluride power generation glass technology. Pan Jingong is not too worried
about this. He believes that the process of scientific research and product development is like competitive sports. It gathers the strength of the team, keeps curiosity and passion, and endures the pain and failure in the process. "Only when you become a champion, you will have your joy.".
At the same time, he also expects greater government support and more precise policy landing to bring "explosive market" for the development of cadmium telluride power generation glass industry.
saw this disruptive product gain mass acceptance." Pan Jingong is also grateful for his insistence, " In front of the tide is always a minority, at the top of the pyramid is always a minority, the attitude towards innovation determines your position in the pyramid.".
saw this disruptive product gain mass acceptance." Pan Jingong is also grateful for his insistence, " In front of the tide is always a minority, at the top of the pyramid is always a minority, the attitude towards innovation determines your position in the pyramid.".
浙公网安备33010802003254号