Is it normal for a top student with an EQ of 20 to create a chip?

Chapter 17 I want to see the teacher’s true strength! (Please read and collect)
Ke Zhan encountered this situation for the first time and couldn't help but want to frustrate the opponent. He was so arrogant on the first day of class and he would do it again.

In addition, he really wanted to see Luo Yao's strength.

Maybe the other party can add luster to my future professional title evaluation.

But now in class, so many people are watching. If Ke Zhan takes the question alone to test Luo Yao now, he will inevitably get a reputation as a chick among the students. He decided to find an opportunity to test Luo Yao.

"Okay, now that Luo Yao has learned this semester's class, you might as well listen to it again and see if your own understanding is the same as what we are going to talk about."

When Luo Yao heard this, it made sense, so he continued to sit still and wait for Ke Zhan's lecture.

Ke Zhan calmed down and immediately got to the point.

He was originally going to continue the basic theory today, but when he thought of Luo Yao's words just now, he temporarily changed the lecture content and changed it to explaining exercises.

This was a pain for the other students, who were still confused about the basic theory. When they saw the questions Ke Zhan asked on the blackboard, their eyes suddenly darkened.

"Okay, let's take a look at this question. Suppose there is a pn junction solar cell chip."

"The electron mobility of the p-type semiconductor is μ_p, the electron diffusion coefficient is D_p, the boron (B) doping concentration is N_A, the electron mobility of the n-type semiconductor is μ_n, the electron diffusion coefficient is D_n, and the phosphorus (P) doping concentration The concentration is N_D.”

"The surface reflectance of the solar cell is R, the incident light intensity of sunlight is I_0, and the incident angle is θ."

"Come on, let's calculate the short-circuit current (I_sc) of the solar cell."

After Ke Zhan finished speaking, everyone in the classroom fell silent.

"Damn it, this question is so vicious. Do you want to kill me?" Wang Ye was stunned. He didn't recognize half of the things on the blackboard.

What else do you need to learn?

He now really regrets that he entered this department based on his good grades.

"How is it? Don't you know?" Ke Zhan held the chalk and glanced at Luo Yao.

Didn’t you say you have already taught yourself?

Why is there no response?

Ke Zhan felt a little disappointed.

It seems that Luo Yao is just a person whose words are greater than his strength.

The first prize for three subjects in the national competition is probably because this year's test questions were easy.

We really need to take good care of people like this in the future, otherwise they will be severely beaten by society if they leave society.

Of course Luo Yao didn't move, because he wanted to see how the other party's way of solving problems was different from his own.

For Luo Yao, solving problems is his most enjoyable process. If he can learn new problem-solving methods, then he will make money.

"Come on, let's start solving the problem."

"First of all, we need to understand what the short-circuit current is. The short-circuit current is the current of the solar cell when there is a short-circuited external load resistor at both ends of the battery, that is-"

“Isc=qμpNAμpNDTWI0sin(θ)”

"Teacher, there is a problem."

Before Ke Zhan could continue speaking, Luo Yao started to raise his hands and speak.

What the fuck?

Did he actually see the problem?
When other students were about to fall asleep, Luo Yao's voice made their sleepiness dissipate.

Everyone looked at the blackboard and saw no problems.

"What's the problem?" Ke Zhan was stunned. He frowned and looked at Luo Yao, gesturing for him to stand up.

"Teacher, the assumption of the question is a PN junction solar cell chip."

"When considering the short-circuit current (Isc) of a PN-type solar cell, we have two key factors to consider: the electron doping concentration of the n-type semiconductor (ND) and the electron doping concentration of the p-type semiconductor (NA)." The difference in doping concentration leads to the concentration gradient of electrons and holes, which in turn affects the current. "

"In a PN junction, when an n-type semiconductor and a p-type semiconductor come into contact, electrons flow from the n-type semiconductor to the p-type semiconductor, and holes flow from the p-type semiconductor to the n-type semiconductor, which results in the redistribution of charge."

"So when calculating, it should be like this."

After Luo Yao expressed his thoughts, he walked to the podium without any courtesy, took out his pen and added a few strokes after the formula written by Ke Zhan.

Isc=q(μnNDμpNA)TWI0sin(θ)
"μ_nN_D and μ_pN_A respectively represent the contribution of electrons in n-type semiconductors and holes in p-type semiconductors. The difference between the two constitutes the current of the entire solar cell."

"This current is generated under the action of the built-in electric field, and the size and direction of the built-in electric field are determined by the difference in doping concentration."

"So this is the correct way to calculate short-circuit current."

As Luo Yao said this, Ke Zhan was verifying it. Soon he knew that Luo Yao was right.

He didn't expect that this little mistake would be noticed by Luo Yao.

In order to regain his face, Ke Zhan could only say: "This is just a small mistake on my part. Teacher, I recently published a paper, so I was very busy and didn't get a good rest."

"paper?"

"What is the direction of your research, teacher?"

"Design and implementation of microchip power supply circuit driven by solar photovoltaic modules." This is Ke Zhan's proud work. Ke Zhan has been preparing to be evaluated for the title of associate professor this year. If he wants to be evaluated as an associate professor, he has to publish a paper, so he Really busy.

After he finished speaking, he did not forget to ask the students to find semiconductor journals to study.

In order to eliminate the embarrassment caused by Luo Yao's correction just now, Ke Zhan basically talked about the process of writing this paper.

Luo Yao returned to his seat. After sitting and listening, he felt more and more that Ke Zhan was average.

After the get out of class, Ke Zhan quickly took the book and left.

After Wang Ye saw Luo Yao leaving, he let out a breath and said, "You said you were too disrespectful to correct him just now. What if he secretly puts on your shoes?"

Luo Yao frowned: "No, even if Teacher Ke is not very good, he would not do this."

"Shh!" Wu Tianming quickly stopped Luo Yao from continuing. After he led the two of them out of the classroom, he said: "Are you two crazy? Discuss this in the classroom. If someone hears it, go and beat the kid. What should I do if I report it?”

"What's the point of doing this?" Luo Yao looked confused.

Wu Tianming said quietly: "Of course it is to pass the exam."

"College tyrants, final exam scores should be divided into test scores and normal time scores. The failure rate of our major is about 60%. Guess how many people do some extra things in order to get full normal time scores?"

"If you keep doing this, what if your usual points are deducted?"

"What percentage of the usual score accounts for the total score?" Luo Yao thought for a while and decided to ask the most important thing first.

"30%."

"That's okay, I can still pass even if I finish all the deductions." Luo Yao said nonchalantly.

Wu Tianming and Wang Ye looked at each other, knowing that this was something only a top student could say.

"By the way, where is the school library?" Luo Yao suddenly became energetic.

"In a building outside."

"Are you going to read a book?"

"I'm going to read Mr. Ke's thesis. I want to see what his real strength is."

Ps Thank you for everyone's support and rewards. An updated chapter has been added. Please continue to ask for votes. If the results are good, it will be published by the tens of thousands every day!

(End of this chapter)