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Fudan University announced the successful development of the world's first two-dimensional semiconductor chip, "Wuji".
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Industry News
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Release time:
2025-04-07
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April 2nd, news reported that a joint team from Fudan University's National Key Laboratory of Integrated Circuits and Systems, led by Zhou Peng and Bao Wen Zhong, successfully developed the world's first 32-bit RISC-V architecture microprocessor based on two-dimensional semiconductor materials, named "Wuji" (meaning "Limitless").
According to reports, this achievement breaks through the engineering bottleneck of two-dimensional semiconductor electronics, achieving an integration level of 5900 transistors for the first time. It also sets a new international record for the largest scale verification of a two-dimensional logic chip. This domestically developed technology, with independent intellectual property rights completed by the Fudan team, gives China a leading advantage in the research and development of next-generation chip materials.
"An inverter is a very basic and important logic circuit, and its yield directly reflects the quality of the entire chip." Zhou Peng, a professor at Fudan University's School of Microelectronics, introduced that unlike silicon wafers, which can grow high-quality large-size single crystals through the Czochralski method, two-dimensional materials need to be grown through chemical vapor deposition (CVD), which leads to defects and non-uniformity in the materials themselves. The inverter yield in this research is as high as 99.77%, with excellent performance such as single-stage high gain and ultra-low leakage current in the off state, which is an engineering breakthrough. 
Connecting the ENIAC and Intel 4004 and their years of birth with the achievement of addition operations.
The team used low-energy processes such as flexible plasma processing technology to process the surface of the two-dimensional semiconductor, thus avoiding damage to the material caused by high-energy particles, giving full play to the advantages of two-dimensional semiconductors and ensuring chip quality.
In addition, the product has excellent performance such as single-stage high gain and ultra-low leakage current in the off state. The team verified, through rigorous automated testing equipment, that at a 1 kHz clock frequency, a thousand-gate chip can serially implement 37 types of 32-bit RISC-V instructions, meeting the requirements of the 32-bit RISC-V integer instruction set (RV32I). The optimization level of its integration process and the verification results of large-scale circuits have reached the best level internationally.
The relevant results were published in the journal Nature on the evening of April 2nd, Beijing time, under the title "A RISC-V 32-Bit Microprocessor Based on Two-dimensional Semiconductors".
Chip,Fudan University
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