Chapter 383

In the afternoon, Gu Lu accompanied Chen Mo to the Institute of Condensed Matter Physics and Materials Physics of the School of Physics.

Unlike the School of Mathematics, there is only one Institute of Mathematics at Yan University.

There is more than one institute under the jurisdiction of the School of Physics of Yan University.

With the addition of the Institute of Plasma and Nuclear Fusion, which was established just ten years ago, there are a total of five institutes under the jurisdiction of the School of Physics of Yan University.

The Institute of Condensed Matter Physics and Materials Physics, where Gu Lu and Chen Mo are currently going, is one of them.

The institute was founded at the beginning of the millennium and was formed by the merger of five of the seven majors (semiconductors, magnetism, low-temperature physics, solid structures, and solid energy spectroscopy) of the former Department of Physics.

As a result, the institute is divided into five different research centers.

Gu Lu took Chen Mo to the office of the Semiconductor Research Center of the Institute of Condensed Matter Physics and Materials Physics.

A research assistant waits in the doorway.

Seeing Gu Lu leading Chen Mo to appear at the staircase, he greeted him politely.

"Is it Professor Gu?"

"It's me, I said hello to Director Zhang. Gu Lu nodded and smiled lightly.

While having lunch with Simon, Gu Lu greeted Director Zhang of the Semiconductor Research Center and said that he would come here in the afternoon.

"Director Zhang is waiting in the office, Professor Gu, I'll take you to meet him. ”

In the director's office of the research center, Gu Lu met Director Zhang wearing a pair of reading glasses.

Director Zhang, whose full name is Zhang Weiguo, is currently the boss of the semiconductor research center of the institute.

Director Zhang and Gu Lu's brother Bao Songquan are about the same age, and they are one of several big names in the field of semiconductor physics in China, and they have the strength to impact academicians of the Chinese Academy of Sciences.

Gu Lu and Director Zhang know each other.

Because when Gu Lu was still an undergraduate, Director Zhang was the teacher of the course "Solid State Physics" in the School of Physics.

Gu Lu often went to this course of Director Zhang.

After going back and forth, Director Zhang remembered Gu Lu.

…………

In the office, Director Zhang was frowning and looking down at a document.

Hearing the sound of pushing the door, Director Zhang raised his head and his eyes fell on Gu Lu.

"Gu Lu, I haven't seen you for a few years, you are getting more and more handsome!" Director Zhang got up and walked in front of Gu Lu with a smile.

Gu Lu shook hands with Director Zhang and said politely, "Director Zhang hasn't aged at all in the past few years!"

"Hey, don't make me laugh here, I don't know what I'm like. Director Zhang touched his bald head, which had no hair left, and sighed, "I think back then, my dense black hair is now only a few left." ”

Back then, although he was just an ordinary professor of Yan University, he at least had thick black hair, which was the envy of countless people.

Now, although he has been promoted, he has also become bald.

That's the price of getting stronger!

Director Zhang touched his head, spread out his palm, and lay on it quietly with a fallen hair.

Director Zhang took out a small mirror and looked at his head that was about to become shiny, and sighed, "Alas, my little eleven is gone." ”

After speaking, Director Zhang carefully opened a box filled with a lot of fallen hairs and sent this hair in.

"Little Eleven, you and your brothers and sisters can sleep here in peace. ”

Gu Lu: "???"

What's going on?

Fortunately, the researcher assistant next to him explained Gu Lu's confusion.

"Not long ago, Director Zhang named every hair on his head. It is said that not long after taking it, Ah Da Ah Er and Ah San all fell off, which made Director Zhang sad for a long time. ”

Gu Lu: "......"

Speaking of which, Director Zhang is really pitiful.

Gu Lu remembered that when he was an undergraduate, Director Zhang combed his hair meticulously every time he went to class.

But now, Director Zhang's home doesn't have a comb.

Gu Lu wanted to exchange for a bottle of anti-hair loss medicine for Director Zhang.

However, anti-hair loss agents are anti-hair loss, and they are not hair growth.

It shouldn't be of much use to Director Zhang.

Forget it, if you're bald, you'll be bald.

At least, as a scientific researcher, the bald one always makes outsiders look more hanging!

"Director Zhang, my student is working on a graduation project on wide bandgap semiconductors, so I need to borrow the materials and equipment from your research center. Gu Lu said the purpose of the trip.

"That's fine. Director Zhang smiled and said, "During non-working hours, most of those instruments don't work, so you can just come and use them." There are also materials, wide tight band semiconductor materials are not too expensive, you are open to use!"

Gu Lu gestured to Chen Mo with his eyes.

Chen Mo immediately understood, and thanked in an excited tone, "Thank you, Director Zhang." ”

Director Zhang nodded with a smile, "But then again, Gu Lu, didn't you just get the qualification of a doctoral supervisor, this is to accept a student with a second and third doctorates?"

Director Zhang's gaze fell on Chen Mo.

"No, Director Zhang. Gu Lu smiled and shook his head, "Chen Mo is a Ph.D. student just this year, but I hope they will get their doctoral dissertation out first, and then follow me or go to some research institutions for further study." ”

"I'll get my graduation thesis as soon as I get my doctorate, Gu Lu, you are quite demanding of your students. Director Zhang was a little smacked after hearing this.

"It's not harsh!" Before Gu Lu could speak, Chen Mo opened his mouth with a serious expression, "It's not harsh at all, I think Teacher Gu's arrangement is very good, it can fully exercise our ability, temper our will, and temper our spirit!"

Gu Lu twitched the corner of his mouth.

Director Zhang was very happy after hearing it, "This kid ......"

"Alright, let's go straight to the lab and teach you how to operate the equipment. Director Zhang proposed.

Gu Lu had no opinion, "Okay, let's go over." ”

The three of them changed into dark brown lab coats, put on disposable masks, and pushed open the door of the wide bandgap semiconductor laboratory under the leadership of Director Zhang and walked in.

Wide bandgap semiconductors are the third generation of semiconductor materials developed after the first generation of elemental semiconductor materials (Si) and the second generation of compound semiconductor materials (GaAs, GaP, InP, etc.).

This type of semiconductor is called a wide bandgap semiconductor because of its wide bandgap width.

The bandgap width of the first and second generation semiconductors is generally around 1.0 eV to 1.5 eV.

However, the bandgap width of wide bandgap semiconductors is greater than 2eV, and such materials mainly include SiC (silicon carbide), C-BN (cubic boron nitride), GaN (gallium nitride), AlN (aluminum nitride), ZnSe (zinc selenide) and diamond.

The bandgap width has a decisive impact on the performance of semiconductor devices, which directly determines the withstand voltage and maximum operating temperature of the device.

The wider the band gap, the stronger the pressure and high temperature resistance.

Therefore, in many performances, the third generation of wide tight band semiconductors is better than the first and second generations.