The correct match of energy level diagram for blue and red LEDs should be determined. Concept introduction: The quantum dots of any solids can be defined as the semiconductor particles that have size in nanoparticle range and changes color with change in diameter of particles. These quantum dots are used in solar cells, LEDs, quantum computing, medical imaging. Since size of nanoparticle is intermediate between the bulk solids and atoms thus the spacing between electronic energy also has intermediate value between large for atoms and continuous band for bulk solids. Therefore, spacing between bands depends on size of nanoparticle. These different energy gaps can create valence band and conduction band and can give different colors on transition.

Question

Want to see the full answer?

Answer 1

Question

Chapter 12, Problem 12.25CP

Interpretation Introduction

Interpretation:

The correct match of energy level diagram for blue and red LEDs should be determined.

Concept introduction:

The quantum dots of any solids can be defined as the semiconductor particles that have size in nanoparticle range and changes color with change in diameter of particles. These quantum dots are used in solar cells, LEDs, quantum computing, medical imaging. Since size of nanoparticle is intermediate between the bulk solids and atoms thus the spacing between electronic energy also has intermediate value between large for atoms and continuous band for bulk solids. Therefore, spacing between bands depends on size of nanoparticle. These different energy gaps can create valence band and conduction band and can give different colors on transition.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Students have asked these similar questions

b) Certain cyclic compounds are known to be conformationally similar to carbohydrates, although they are not themselves carbohydrates. One example is Compound C shown below, which could be imagined as adopting four possible conformations. In reality, however, only one of these is particularly stable. Circle the conformation you expect to be the most stable, and provide an explanation to justify your choice. For your explanation to be both convincing and correct, it must contain not only words, but also "cartoon" orbital drawings contrasting the four structures. Compound C Possible conformations (circle one): Дет

Lab Data The distance entered is out of the expected range. Check your calculations and conversion factors. Verify your distance. Will the gas cloud be closer to the cotton ball with HCI or NH3? Did you report your data to the correct number of significant figures? - X Experimental Set-up HCI-NH3 NH3-HCI Longer Tube Time elapsed (min) 5 (exact) 5 (exact) Distance between cotton balls (cm) 24.30 24.40 Distance to cloud (cm) 9.70 14.16 Distance traveled by HCI (cm) 9.70 9.80 Distance traveled by NH3 (cm) 14.60 14.50 Diffusion rate of HCI (cm/hr) 116 118 Diffusion rate of NH3 (cm/hr) 175.2 175.2 How to measure distance and calculate rate

For the titration of a divalent metal ion (M2+) with EDTA, the stoichiometry of the reaction is typically: 1:1 (one mole of EDTA per mole of metal ion) 2:1 (two moles of EDTA per mole of metal ion) 1:2 (one mole of EDTA per two moles of metal ion) None of the above