DLTS

Experimentally, local vibrational modes associated witli a defect or impurity may appear in infra-red absorjrtion or Raman spectra. The defect centre may also give rise to new photoluminescence bands and otlier experimentally observable signature. Some defect-related energy levels may be visible by deep-level transient spectroscopy (DLTS) [23]. 

The donor level (-1- / 0) corresponds to the ionization energy essentially identical configurations. The ionization energy measured by pSR is very close to the donor level obtained for hydrogen by DLTS [30], 0.175 0.005 eV. 

Paclitaxel Peripheral neuropathy (DLT), nausea/vomiting, alopecia, hypersensitivity reactions Use caution with any elevation in AST (SGOT). Give proper dosing for liver dysfunction. Premedicate dexamethasone, diphenhydramine, and cimetidine. 

Docetaxel Neutropenia (DLT), hyperlacrimation, fluid retention, nail disorders, myelosuppression Use with caution in liver dysfunction. Do not give if biliary tract is obstructed. Premedicate dexamethasone. 

Cisplatin Neurotoxicity (DLT), nausea/vomiting, ototoxicity, nephrotoxicity, myelosuppression, electrolyte wasting, diarrhea Prehydration required. Do not use if ScCr greater than 1.5 mg/dL or BUN greater than 25. Give proper dosing for renal dysfunction. 

Gemcitabine 800 mg/m2 IV infused over 30 minutes once a week on days 1,8, 1 5, followed by 1 week of rest 13.9%-27% Myelosuppression (DLT), flulike symptoms, headache, somnolence, nausea/vomiting, stomatitis, diarrhea, constipation, rash ... 

Martinez dlT, Locati M, Buracchi C, et al. Increased inflammation in mice deficient for the chemokine decoy receptor D6. Eur J Immunol 2005 35 1342-1346. 

TN Freshwater States with Adult Blood Lead Level Reaistries 1 Reoortina Level fua/dLt ... 

Figure 7.4 presents a sketch for the deduction of the intensity in symmetrical-reflection geometry. F is the footprint area of an incident microbeam on the sample surface, and dlt is the related contribution to intensity. Again utilizing the absorption law Eq. (7.1) we have... 

Bleomycin -antitumor antibiotic that causes DNA strand breakage -dose-related pneumonitis -mucocutaneous effects (stomatitis, mucositis) -acute pulmonary edema -fever in 50% -hyperpigmentation (can rarely be DLT)... 

Three classes of polynuclear complexes containing metal-metal bonds possess emissive excited states that undergo oxidation-reduction reactions in solution the prototypes are Re2Cl T(dlt d lt),... 

Figure 1 shows a deep level transient spectroscopy (DLTS) (Lang, 1974) spectrum from a Au-diffused, n-type Si sample before and after hydrogenation of 300°C for 2h (Pearton and Tavendale, 1982a). The well-known Au acceptor level (Ec - 0.54 eV) was passivated to depths > 10 pm under these conditions and was only partially regenerated by a subsequent... 

Copper and nickel are also common contaminants in Si and can often be introduced during annealing treatments. Both of these impurities are extremely rapid diffusers and cannot be retained in electrically active form even by rapid quenching of diffused samples (Weber, 1983). Quite often, complexes involving Cu or Fe impurities are observed by DLTS in heat-treated Si. All of these centers are hole traps, with Cu giving rise to levels at Ev + 0.20 eV, Ev + 0.35 eV and Ev + 0.53 eV, whereas Ni is related to levels at Ev + 0.18 eV, Ev + 0.21 eV and Ev + 0.33 eV. All of these levels are passivated by reaction with atomic hydrogen (Pearton and Tavendale, 1983), and are restored by annealing at 400°C. 

Fig. 10. DLTS spectrum for a Schottky-barrier diode on n-type ( 7 x 1015 P/cm3) silicon after hydrogenation (150°C, 50 min). The emission rate window e0 corresponds to delay times of 0.5 and 2.5 ms. Each peak is labeled with the measured activation energy for thermal emission of electrons (Johnson et al., 1987a).

Fig. 11. Capacitive transient spectra of defect states associated with dislocations in ultra-pure germanium (crystal 281 grown along [100] under 1 atmosphere of H2) The micrographs show the etch pits produced by dislocations on a (100) surface. DLTS peak b has an activation energy of Ev + 20 meV. The net-shallow acceptor concentration is 1010 cm-3.

---