astronomy

Lee Kwang-hee

Lee Kwang-hee is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Lee Kwang-hee rather than just read about it. In short: Lee Kwang-hee, born in 1960, is a South Korean physicist. Since 2007, he has served as the director of the Research Institute for Solar and Sustainable Energy at the Gwangju Institute of Science and Technology (GIST).

Key takeaways

Lee Kwang-hee belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Lee Kwang-hee to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Lee Kwang-hee from memory before moving on to harder problems.

Reference excerpt

Lee Kwang-hee, born in 1960, is a South Korean physicist. Since 2007, he has served as the director of the Research Institute for Solar and Sustainable Energy at the Gwangju Institute of Science and Technology (GIST).

Biography Lee is currently a full professor of the Materials Science & Engineering Department and a vice-director of the Heeger Center for Advanced Materials at the Gwangju Institute of Science and Technology (GIST) in Korea. His major areas of focus include polymer devices such as polymer LEDs, polymer solar cells, and polymer FETs using semiconducting and metallic polymers. He received a BS degree from Seoul National University in 1983, and a MS degree from KAIST in 1985. Lee then worked at the Korea Atomic Energy Research Institute as a Staff Researcher from 1985 to 1990. In 1990 he migrated to the US for his doctorate study at the University of California, Santa Barbara (UCSB) and obtained his Ph.D. in March 1995 under the supervision of Alan J. Heeger. After finishing his post-doctoral work at UCSB in 1997, Lee started his professorship at the Pusan National University in South Korea. In 2007, Lee moved to his current position of a Full Professor at GIST.

Scientific discoveries Established a theoretical model of charge dynamics in conducting polymers called the localization modified Drude model. Produced truly metallic polymers. Performed the fabrication of all-solution processable tandem polymer solar cells Internal quantum efficiencies approaching 100% were obtained in his polymer solar cells. He realized that the conductivity of conducting polymer films was increased by aligning polymer chains. Used statically charged self-assembled non-conjugated polyelectrolytes as an interfacial layer for inverted polymer solar cells Key role of interchain coupling in the metallic state of conducting polymers

References

Worked examples

Example 1 — a first encounter with Lee Kwang-hee

Start with the simplest possible case. Write down what Lee Kwang-hee claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Lee Kwang-hee before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Lee Kwang-hee ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Lee Kwang-hee

In research: Lee Kwang-hee appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Lee Kwang-hee in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Lee Kwang-hee is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1960 births, Academic staff of Gwangju Institute of Science and Technology, KAIST alumni, so understanding it makes those chapters shorter.
In everyday life: Look for Lee Kwang-hee outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Lee Kwang-hee” →

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Lee Kwang-hee in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Lee Kwang-hee means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Lee Kwang-hee out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Lee Kwang-hee in simple terms?

Why does Lee Kwang-hee matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Lee Kwang-hee?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Lee Kwang-hee.