Quantum Well Infrared Photodetectors

JAGADISH

CHAPTER

Ch02-9780123813374

2011/4/30

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2 Quantum Well Infrared Photodetectors S. D. Gunapala, S. V. Bandara, S. B. Rafol, and ∗ D. Z. Ting

Contents

1. Introduction 2. Comparison of Various Types of QWIPs 2.1. n-Doped QWIPs 2.2. p-Doped QWIPs 2.3. n-Doped Bound-to-Continuum QWIPs 2.4. n-Doped Bound-to-Quasibound QWIPs 2.5. n-Doped Broadband QWIPs 2.6. n-Doped Bound-to-Bound Miniband QWIPs 2.7. n-Doped Bound-to-Continuum Miniband QWIPs 2.8. n-Doped Bound-to-Miniband QWIPs 2.9. n-doped In0.53 Ga0.47 As/In0.52 Al0.48 As QWIPs 2.10. n-doped In0.53 Ga0.47 As/InP QWIPs 3. Figures of Merit 3.1. Absorption spectra 3.2. Dark current 3.3. Responsivity 3.4. Dark current noise 3.5. Noise gain and Photoconductive gain 3.6. Quantum efficiency 3.7. Detectivity 4. Light Coupling 4.1. One-dimensional periodic gratings 4.2. Two-Dimensional Periodic Gratings 4.3. Gratings for multi-color and broadband detectors 4.4. Effect of finite-size pixels

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∗ Center for Infrared Sensors, Jet Propulsion Laboratory, California Institute of Technology, Pasadena,

CA 91109, USA Semiconductors and Semimetals, Volume 84 ISSN 0080-8784, DOI: 10.1016/B978-0-12-381337-4.00002-4

c 2011 Elsevier Inc.

All rights reserved.

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