При исследовании спектров ФЛ CVD-гр

При исследовании спектров ФЛ CVD-графена на фурье спектрометре BrukerVertex 80V в качестве накачки использовался Nd:YAGлазер Solarс длиной волны 1 мкм, в качестве детектора использовался КРТ приёмник с красной границей 16 мкм.
Была обнаружена широкая линия ФЛ с характерным временем 300 мкс. При понижении температуры с 300 до 20 К сигнал упал в три раза.

Исследование ФЛ чешуек графена производилось с помощью фурье-спектрометра BrukerVertex 80V, для накачки использовался импульсный Nd:YAGлазер Solarдлина волны 1 мкм, в качестве детектора использовались 16 микронный КРТ детектор. Излучение лазера фокусировалось на образце в пятно диаметром ~ 1 мм.
При комнатной температуре был обнаружен слабый сигнал ФЛ как от структуры с чешуйками (преимущественно исследовались чешуйки размером 25 х 25 мкм), так и от подложки без чешуек (reference). Характерное время сигнала ФЛ составляло 15 мкс.Вклад чешуек графена в сигнал ФЛ установить не удалось.

Для дальнейшего исследования спектров ФЛ чешуек графена были произведены дополнительные измерения с использованием в качестве детектора кремниевого болометра. При этом в качестве накачки использовался как импульсный лазер Solar, так и непрерывный лазер мощностью~ 300 мВт с длиной волны 808 нм. При работе с непрерывным источником использовалась методика синхронного детектирования с помощью синхродетектора StanfordSR830.
К сожалению, в ходе дополнительных измерений сигнала ФЛ от чешуек графена обнаруженоне было.

Results (English) 1:

In the study of Spectra FL CVD Graphene on Fourier Spectrometer BrukerVertex 80V as pumping of Nd: YAGlazer Solars used a wavelength of 1 µm, used as a detector of CA receiver with red border 16 µm.Wide FL line was found with a characteristic time 300 μs. When the temperature drops with 300 to 20 to signal dropped three times. Study of Graphene flakes FL produced using FTIR spectrometer BrukerVertex 80V, for pumping made pulse Nd: YAGlazer Solardlina wave 1 µm, used as a detector of 16 Micron KRT detector. Laser radiation focused on the sample spot diameter ~ 1 mm.At room temperature was found weak signal FL as the structure of the scales (mostly researched scales the size of 25 x 25 μm) and the substrate without scales (reference). Characteristic time signal FL was 15 µs. contribution of Graphene flakes in signal FL. For further study of the spectra of Graphene flakes were made INDIVIDUAL additional measurements using a Silicon bolometer as a detector. The pump was used as a Pulse Laser Solar and continuous laser ~ 300 MW wavelength 808 nm. When you work with a continuous source of methodology of synchronous detection using sinhrodetektora StanfordSR830.Unfortunately, additional measurements of the signal from INDIVIDUAL Graphene flakes was obnaruženone.

Results (English) 2:

In the study of the spectra of photoluminescence CVD-graphene on a Fourier spectrometer BrukerVertex 80V as a pump used Nd: YAGlazer Solars wavelength of 1 micron, was used as a detector MCT receiver with red border 16 m.
Wide PL line was detected with a characteristic time of 300 microseconds. . When the temperature is lowered from 300 to 20 K, the signal has fallen three times PL graphene flakes was investigated using BrukerVertex 80V Fourier spectrometer, for pumping a pulsed Nd: YAGlazer Solardlina wave 1 micron, 16 micron MCT detector is used as a detector. The laser beam was focused on the sample in a spot diameter of about 1 mm. At room temperature, was found weak photoluminescence signal from both the structures with scales (mostly studied scales the size of 25 x 25 m), and away from the substrate without scales (the reference). The characteristic time of the PL signal was 15 mks.Vklad flakes of graphene in the photoluminescence signal has not been established. To further investigate the photoluminescence spectra of graphene flakes additional measurements were carried out using as a silicon bolometer detector. Thus as the pumping laser used as a pulse Solar, and continuous laser power from about 300 mW, a wavelength of 808 nm. When working with a continuous source of the methodology synchronous detection using the sync detector StanfordSR830. Unfortunately, in the course of further measurements of the PL signal from graphene flakes obnaruzhenone was.

Results (English) 3:

the study of spectra of 3 cvd - графена on fourier gcms BrukerVertex 80V as% used nd: YAGлазер Solarс wavelengths of 1 microns, as a used crt receiver with a red border 16 microns.there was a broad line 3 with a characteristic time of 300 mks. when lowering the temperature from 300 to 20 to a signal down three times.study 3 графена flakes produced by fourier transform spectrometer BrukerVertex 80V for injecting used pulse nd: YAGлазер Solarдлина waves 1 microns, were used as the detector 16 микронный eeoc detector. focuses on the sample in a laser radiation of ~ 1 mm.at room temperature, was found a weak signal 3 from the structure with чешуйками (mainly researched scales of size 25 x 25 microns) and from the substrate without the flakes (reference). the characteristic time of the signal 3 of 15 мкс.вклад flakes графена signal 3 has not been identified.to further study the spectra of 3 графена flakes were made additional measurements using a detector кремниевого болометра. the as (used as a pulse laser and continuous laser power solar, ~ 300 mw with a wavelength of 808 nm. when working with a continuous source of methodology followed by simultaneous detection of синхродетектора StanfordSR830.unfortunately, the additional measurement signal 3 from the flakes графена обнаруженоне.