Understanding Quaternaries in Semiconductor Nanodevice Design

Learn about the treatment of quaternary materials in semiconductor nanodevice simulations, including material parameters needed for GaAs/AlGaAs heterostructures and interpolation techniques for ternaries. Explore the complexities of AlxGa1-xAsyP1-y and AlxGa1-xIn1-x-yAs quaternaries, along with the necessary parameters and software resources available for designing semiconductor devices.

• Nanodevices
• Semiconductor
• Quaternaries
• Material Parameters
• Nextnano

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1. www.nextnano.com stefan.birner@nextnano.com 2017-Dec-15 How to treat Quaternaries in nextnano Dr. Stefan Birner, Managing Director nextnano GmbH, Garching b. M nchen, Germany Software for semiconductor nanodevices

2. Material parameters needed GaAs/AlGaAs heterostructures (no strain) effective masses (me, mhh, mlh, mso, ...) or k p parameters band gap Egap, split-off energy band offsets (CBO, VBO) dielectric constant (Poisson equation) Software for semiconductor nanodevices

3. Ternaries a. Linear interpolation b. Quadratic interpolation using a constant bowing parameter c. Interpolation using a bowing parameter which depends on alloy content x Software for semiconductor nanodevices

4. Ternaries Ternary Binaries GaAs, AlAs C x (1-x) Ternary AlxGa1-xAs = x AlAs + (1-x) GaAs C(x) x (1-x) Bowing parameter C might depend on alloy content x Software for semiconductor nanodevices

5. Quaternaries Quaternary: AlxGa1-xAsyP1-y III-III-V-V III-III-III-V, III-V-V-V Software for semiconductor nanodevices

6. Quaternaries AlxGa1-xIn1-x-yAs III-III-III-V III-V-V-V 10 parameters! Software for semiconductor nanodevices

7. Quaternaries AlxGa1-xAsyP1-y III-III-V-V 13 parameters! Software for semiconductor nanodevices

8. Material parameters needed GaAs/InGaAs heterostructures (strain!) ... + lattice constant elastic constants (2-3 parameters) piezoelectric constant deformation potentials (3-8 parameters) Software for semiconductor nanodevices

9. nextnano++ software http://www.nextnano.com/nextnanoplus/software_documentation/input_file/structure.htm http://www.nextnano.com/nextnanoplus/software_documentation/database/zincblende.htm Software for semiconductor nanodevices

10. More information PhD thesis T. Zibold (Appendix E) http://www.nextnano.com/information/publications.php nextnano software http://www.nextnano.com/nextnano3/input_parser/database/docu/quaternaries.htm http://www.nextnano.com/nextnano3/tutorial/1Dtutorial_AlGaInP_onGaAs.htm Software for semiconductor nanodevices