2 research outputs found
Optical properties of GaSe semiconducting crystals intercalated by CdTe nanoparticles
The transmission spectra of GaSe crystals intercalated by CdTe nanoparticles
(NPs) from aqueous colloidal solutions were investigated at 77 K in the range of GaSe
excitonic absorption. Solutions of two types β yellow (with 1-2.5 nm NPs) and orange
(with 2.5-3.5 nm NPs) β were used for the experiments. Essential GaSe optical density
intensity growth in proportion to exposition time was observed after intercalation from
yellow solutions up to 50 days. While the exciton peak position (near 2.1 eV) coincides
both in βpureβ GaSe and GaSe(CdTe) after intercalation from yellow solution, the
shortwave shift is observed for GaSe(CdTe) intercalated from the orange solutions. The
results are discussed in assumption of strain effect presence
ΠΠΌΡΠ½Π° ΠΎΠΏΡΠΈΡΠ½ΠΈΡ Π²Π»Π°ΡΡΠΈΠ²ΠΎΡΡΠ΅ΠΉ ΠΌΠΎΠ½ΠΎΡΠ΅Π»Π΅Π½ΡΠ΄ΡΠ² ΡΠ½Π΄ΡΡ Ρ Π³Π°Π»ΡΡ ΠΏΡΠΈ ΡΠ΅ΡΠΌΡΡΠ½ΠΎΠΌΡ Π²ΠΏΡΠΎΠ²Π°Π΄ΠΆΠ΅Π½Π½Ρ NaNO2
The effect of the thermal introduction of NaNO2 on the optical properties of indium and gallium monoselenides was investigated. The transmission spectra of InSe and GaSe and their NaNO2-intercalates were identified by means of the installation spectrometric collected on the basis of monochromator MDR-23. It was found that the time dependence of the concentration of NaNO2-intercalates has the non-monotonic character with areas of different intercalation speeds.ΠΠΎΡΠ»ΡΠ΄ΠΆΠ΅Π½ΠΎ ΡΠΏΠ΅ΠΊΡΡΠΈ ΠΏΡΠΎΠΏΡΡΠΊΠ°Π½Π½Ρ Π² ΠΎΠ±Π»Π°ΡΡΡ Π΅ΠΊΡΠΈΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΏΠΎΠ³Π»ΠΈΠ½Π°Π½Π½Ρ Π΄Π»Ρ ΠΌΠΎΠ½ΠΎΠΊΡΠΈΡΡΠ°Π»ΡΠ² InSe Ρ GaSe, Π΅ΠΊΡΠΏΠΎΠ½ΠΎΠ²Π°Π½ΠΈΡ
Π² ΡΠΎΠ·ΠΏΠ»Π°Π²Ρ ΡΠΎΠ»Ρ NaNO2. ΠΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½Ρ Π½Π΅ΠΌΠΎΠ½ΠΎΡΠΎΠ½Π½Ρ ΠΊΠΎΠ½ΡΠ΅Π½ΡΡΠ°ΡΡΠΉΠ½Ρ Π·Π°Π»Π΅ΠΆΠ½ΠΎΡΡΡ Π΅Π½Π΅ΡΠ³Π΅ΡΠΈΡΠ½ΠΎΠ³ΠΎ ΠΏΠΎΠ»ΠΎΠΆΠ΅Π½Π½Ρ Π΅ΠΊΡΠΈΡΠΎΠ½Π½ΠΎΠ³ΠΎ ΠΌΠ°ΠΊΡΠΈΠΌΡΠΌΡ ΠΠ΅ΠΊΡ. ΠΡΡΠ°Π½ΠΎΠ²Π»Π΅Π½ΠΎ, ΡΠΎ Π½Π΅ΠΌΠΎΠ½ΠΎΡΠΎΠ½Π½ΠΈΠΉ Π·ΡΡΠ², ΡΠΊΠΈΠΉ ΡΠΏΠΎΡΡΠ΅ΡΡΠ³Π°ΡΡΡΡΡ ΠΏΡΠΈ Π’ = 77 Π Π΄Π»Ρ ΠΌΠ°ΠΊΡΠΈΠΌΡΠΌΡ ΠΠ΅ΠΊΡ ΠΏΡΠΈ Π·Π±ΡΠ»ΡΡΠ΅Π½Π½Ρ ΡΠ°ΡΡ Π²ΠΈΡΡΠΈΠΌΠΊΠΈ, ΠΎΠ±ΡΠΌΠΎΠ²Π»Π΅Π½ΠΈΠΉ Π²ΠΈΠ½ΠΈΠΊΠ½Π΅Π½Π½ΡΠΌ ΠΌΡΠΆΡΠ°ΡΠΎΠ²ΠΈΡ
Π΄Π΅ΡΠΎΡΠΌΠ°ΡΡΠΉΠ½ΠΈΡ
Π½Π°ΠΏΡΡΠ³ ΡΠ° Π·ΠΌΡΠ½ΠΈ Π²Π΅Π»ΠΈΡΠΈΠ½ΠΈ Ξ΅0 Π΄ΡΠ΅Π»Π΅ΠΊΡΡΠΈΡΠ½ΠΎΡ ΠΏΠΎΡΡΡΠΉΠ½ΠΎΡ ΠΊΡΠΈΡΡΠ°Π»Ρ Π²Π½Π°ΡΠ»ΡΠ΄ΠΎΠΊ Π²ΠΏΡΠΎΠ²Π°Π΄ΠΆΠ΅Π½Π½Ρ ΡΠ½ΡΠ΅ΡΠΊΠ°Π»ΡΠ½ΡΠ° Π² ΠΌΡΠΆΡΠ°ΡΠΎΠ²ΠΈΠΉ ΠΏΡΠΎΡΡΡΡ