TEM Studies of Grain Boundary Structure in a Cast Polycrystalline Silicon

Isamu Kuchiwaki; Takahiro Hirabayashi; Hiroshi Fukushima

doi:10.4028/www.scientific.net/MSF.475-479.1673

Paper Titles

Ternary Ceramics Ti₃SiC₂: Combustion Synthesis and the Reaction Mechanism
p.1651

Thermal and Solute Transportation Effects during Bridgman Crystal Growth of II-VI Compounds
p.1657

Low Threshold Current Density 1.5 μm Strained-MQW Laser by n-Type Modulation-Doping
p.1663

Infrared Studies of GaN_1-xP_x Ternary Alloys
p.1669

TEM Studies of Grain Boundary Structure in a Cast Polycrystalline Silicon
p.1673

Effect of Zn and Fe Concentrations on Structure and Optical Damage Resistances of Near Stoichiometric Zn:Fe:LiNbO₃ Crystals
p.1677

Growth of an In_x(OOH,S)_y Buffer Layer and Its Application to Cu(In,Ga)(Se,S)₂ Solar Cells
p.1681

Comparison the Gain Characteristic of AlInGaAs/AlGaAs and GaAs/AlGaAs Quantum Wells
p.1685

Structure Characterizations and Growth of Bulk ZnSe Single Crystals by Zn(NH₄)₃Cl₅ Transport
p.1689

HomeMaterials Science ForumMaterials Science Forum Vols. 475-479TEM Studies of Grain Boundary Structure in a Cast...

TEM Studies of Grain Boundary Structure in a Cast Polycrystalline Silicon

Abstract:

Cast polycrystalline silicon for solar cell contains mostly straight twin boundaries which are thought to have little effect on the electrical activity. There are, however, some complicated grain boundaries in it. One of these boundaries consists of slightly curved and straight parts. The structure of this boundary was analyzed to investigate the difference of these two types of boundaries. The conventional transmission electron microscopy (TEM) found that this slightly curved boundary was the zigzag shaped boundary made by (11 _ ,2) and ( _ ,211) planes. High resolution electron microscopy (HREM) confirmed that (11 _ ,2) plane was the boundary of {112} Σ3 twin boundary which formed a straight grain boundary at the other end of the analyzed grain boundary, and also confirmed that ( _ ,2 11) plane was also the boundary of {112} Σ3 twin boundary which intersected with the former twin boundary at an angle of 120 [deg].