New technology used in transparent LED screen is to eliminate the drawbacks of molecular level on the thickness of thin film
at the university of California, Berkeley and Lawrence Berkeley national laboratory, the engineers, have found a repair simple common defects of thin film on new technology. The findings can promote the development of atomic single semiconductor, suitable for transparent LED, high efficiency solar cells, and a tiny transistor. Through super organic acid processing single semiconductor made of molybdenum disulfide, the researchers were able to make the efficiency of material achieve one hundred times the growth. Lead researcher, professor at the university of California, Berkeley, Ali Javey said: 'this study is' a perfect single photoelectric materials 'for the first time, after we have never heard such a thin material can be done'.
the picture above shows the excited by laser frictionless molybdenum disulfide ( MoS2) Single semiconductor, it helps to transparent LED display, high efficiency solar panel, photoelectric detector, and the development of nanoscale transistors.
the researchers created only 7/10 the thickness of nanometer molybdenum disulfide, than the diameter of 2. More than 5 nm of human DNA. The material will be soaking in acid, can remove contaminants and fill the missing atoms to repair defect - — This chemical reaction is called the 'proton injection' ( protonation) 。
for single-layer the interest of the semiconductor industry, due to its low absorption of light, and the ability to withstand for bending and other characteristics of the pressure caused by the reverse. This makes it to the ideal choice for transparent or flexible equipment, such as deformation of high performance LED display, and at power can become a transparent devices.
left above - Cal Logo shape of MoS2 single semiconductor; Pictured above, right - After treated with super acid effect.
is the process through the defect removal to improve the performance of the transistor in the chip become smaller and more thin, defects also became an important obstacle restricting the development of the computer.
Javey said: 'the development of zero defect monolayer materials, can also clear when a lot of development of new types of low-power switcher the problem'. The team's work has been published in the recently published in nature, ( Science) The journal.