Abstract
The near-infrared (NIR) and infrared (IR) transmissions of Indium (In) doped Cd 1-xMn xTe (CMT) crystals were measured, and both the results show that the transmittances decline dramatically after doping. The reason is that the lattice absorption and free carriers absorption together determine the IR absorption of the crystals. The photoluminescence (PL) spectra measurements show that the donor-acceptor pair (D, A) peak is increased after doping, but the acceptor-bound exciton (A 0, X) peak is reduced. With increasing of In concentrations the (A 0, X) peak disappears and the (D, A) peak stands out completely. This series of changes result from that the substitutional In atoms act as donors and compensate the point defects V Cd. The Raman scattering (RS) measurements exhibit that In doping makes the RS spectra of the longitudinal-optic (LO 1) phonon peak a slight reduction, where LO 1 is relative to the phonon peak of "CdTe-like". Magnetization measurements show that the effects of In-doping on the magnetization of CMT are insignificant.
| Original language | English |
|---|---|
| Pages (from-to) | 383-386 |
| Number of pages | 4 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 41 |
| Issue number | 3 |
| State | Published - Mar 2012 |
Keywords
- Absorption edge
- Indium doping
- IR transmittance
- Magnetization
- Photoluminescence spectrum
- Raman scattering spectrum