Spectral response of InGaAs photocathodes with different emission layers

Mingzhu Yang; Muchun Jin; Benkang Chang

doi:10.1364/AO.55.008732

Applied Optics
Vol. 55,
Issue 31,
pp. 8732-8737
(2016)
•https://doi.org/10.1364/AO.55.008732

Spectral response of InGaAs photocathodes with different emission layers

Mingzhu Yang, Muchun Jin, and Benkang Chang

Not Accessible

Your library or personal account may give you access

Get PDF
Email
Share
Get Citation
Copy Citation Text
Mingzhu Yang, Muchun Jin, and Benkang Chang, "Spectral response of InGaAs photocathodes with different emission layers," Appl. Opt. 55, 8732-8737 (2016)

Export Citation
- BibTex
- Endnote (RIS)
- HTML
- Plain Text
Citation alert
Save article

Abstract

Three InGaAs photocathode samples with different emission layers were prepared using metal organic chemical vapor deposition and activated by Cs, O. The spectral responsivity curves of the three samples were obtained, and the quantum efficiency formula of the InGaAs photocathodes with multi-sublayers was derived. Results show that the InGaAs samples with thick emission layers have higher spectral responsivity, and the wavelength of the threshold decreases with the decrease of the In component. According to the performance parameters obtained by fitting the quantum efficiency of the experiment, it was found that a higher In component corresponds to a lower electron escape probability. Therefore, it is difficult to prepare InGaAs photocathodes with a high electron escape probability and a long threshold wavelength at the same time. By adding mini transition layers between the sublayers, the interface recombination velocity decreases, and the critical thickness of the sublayers increases. In conclusion, mini transition layers are very important for the preparation of InGaAs photocathodes capable of high performance.

Full Article | PDF Article

More Like This

Research on quantum efficiency for reflection-mode InGaAs photocathodes with thin emission layer

Muchun Jin, Xinlong Chen, Guanghui Hao, Benkang Chang, and Hongchang Cheng
Appl. Opt. 54(28) 8332-8338 (2015)

Effect of surface cleaning on spectral response for InGaAs photocathodes

Muchun Jin, Yijun Zhang, Xinlong Chen, Guanghui Hao, Benkang Chang, and Feng Shi
Appl. Opt. 54(36) 10630-10635 (2015)

Spectral response characteristics of the transmission-mode aluminum gallium nitride photocathode with varying aluminum composition

Guanghui Hao, Junle Liu, and Senlin Ke
Appl. Opt. 56(35) 9757-9761 (2017)

Previous Article Next Article

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (5)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (16)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Samples	$L_{D 1}$ (μm)	$L_{D 2}$ (μm)	$L_{D 3}$ (μm)	$S_{v 1}$ (cm/s)	$S_{v 2}$ (cm/s)	$S_{v 3}$ (cm/s)	$P_{0}$	$k$
R1	$1.2 \pm 0.1$	$2.5 \pm 0.1$	—	$10^{9}$	—	—	$0.45 \pm 0.1$	$5.1 \pm 0.1$
R2	$1.2 \pm 0.1$	$1.7 \pm 0.1$	$1.8 \pm 0.1$	$10^{10}$	$10^{10}$	$10^{10}$	$0.65 \pm 0.1$	$3.6 \pm 0.1$
R3	$1.3 \pm 0.1$	$1.8 \pm 0.1$	$2.0 \pm 0.1$	$10^{9}$	$10^{9}$	$10^{9}$	$0.65 \pm 0.1$	$3.6 \pm 0.1$

R2	$ε_{1}$	$ε_{2}$	$ε_{3}$	$h_{c 3}$
R2	$1.772 \times 10^{- 3}$	$1.778 \times 10^{- 3}$	$3.569 \times 10^{- 3}$	100.78 Å
R3	$ε_{1}$	$ε_{2}$	$ε_{3}$	$h_{c 6}$
	$3.980 \times 10^{- 4}$	$0.264 \times 10^{- 4}$	$3.700 \times 10^{- 4}$	$h_{c 6}$
	$ε_{4}$	$ε_{5}$	$ε_{6}$	996.44 Å
	$0.263 \times 10^{- 4}$	$3.687 \times 10^{- 4}$	$0.263 \times 10^{- 4}$	996.44 Å

Samples	$L_{D 1}$ (μm)	$L_{D 2}$ (μm)	$L_{D 3}$ (μm)	$S_{v 1}$ (cm/s)	$S_{v 2}$ (cm/s)	$S_{v 3}$ (cm/s)	$P_{0}$	$k$
R1	$1.2 \pm 0.1$	$2.5 \pm 0.1$	—	$10^{9}$	—	—	$0.45 \pm 0.1$	$5.1 \pm 0.1$
R2	$1.2 \pm 0.1$	$1.7 \pm 0.1$	$1.8 \pm 0.1$	$10^{10}$	$10^{10}$	$10^{10}$	$0.65 \pm 0.1$	$3.6 \pm 0.1$
R3	$1.3 \pm 0.1$	$1.8 \pm 0.1$	$2.0 \pm 0.1$	$10^{9}$	$10^{9}$	$10^{9}$	$0.65 \pm 0.1$	$3.6 \pm 0.1$

R2	$ε_{1}$	$ε_{2}$	$ε_{3}$	$h_{c 3}$
R2	$1.772 \times 10^{- 3}$	$1.778 \times 10^{- 3}$	$3.569 \times 10^{- 3}$	100.78 Å
R3	$ε_{1}$	$ε_{2}$	$ε_{3}$	$h_{c 6}$
	$3.980 \times 10^{- 4}$	$0.264 \times 10^{- 4}$	$3.700 \times 10^{- 4}$	$h_{c 6}$
	$ε_{4}$	$ε_{5}$	$ε_{6}$	996.44 Å
	$0.263 \times 10^{- 4}$	$3.687 \times 10^{- 4}$	$0.263 \times 10^{- 4}$	996.44 Å

Abstract

Cited By

Figures (5)

Tables (2)

Equations (16)

Applied Optics