Introduction to Quantum Dots and Solar Energy Conversion Devices

Table of Contents:
00:09 Introduction to Quantum Dots and Solar Energy Conversion Devices
01:59 Quantum Dots are Nanocrystal Semiconductors
05:28 Energy Usage in the United States
06:40 Potential Impact of Solar Energy Conversion
07:33 Different Wavelengths of Light Have Different Energies
08:43 Light Used is Important in QD-PV Characterization
10:03 Amount of Atmosphere Affects Incoming Photons Available
11:46 Quantum Dot Size Impacts the Band Gap Energy
14:14 Trade-offs Lead to the Shockley-Queisser Limit
15:13 Summary and Lecture Review

In this lecture, we describe the basics of what quantum dots are and how they can be applied to thin film photovoltaic technologies. In particular, we examine the unique properties of quantum dot materials and how these properties can be exploited by scientists and engineers to yield low-cost, light-weight solar modules capable of converting sunlight into electricity in a direct fashion. Additionally, the basics of solar cell characterization and light absorption are detailed and related to the band gap of quantum dot materials. Finally, the potential impact of solar technologies on the energy landscape of the United States is discussed.

This lecture is part of ENGR 132: Transforming Ideas to Innovation II.

On nanoHUB.org at: http://nanohub.org/resources/21815