This study reports successful deposition of high quantum efficiency (QE) bialkali antimonide K2CsSb photocathodes on graphene films. The results pave the way for an ultimate goal of encapsulating technologically relevant photocathodes for accelerator technology with an atomically thin protecting layer to enhance lifetime while minimizing QE losses. A QE of 17% at ≈3.1 eV (405 nm) is the highest value reported so far on graphene substrates and is comparable to that obtained on stainless steel and nickel reference substrates. The spectral responses of the photocathodes on graphene exhibit signature features of K2CsSb including the characteristic absorption at ≈2.5 eV. Materials characterization based on X‐ray fluorescence and X‐ray diffraction reveals that the composition and crystal quality of these photocathodes deposited on graphene is comparable to those deposited on a reference substrate. Quantitative agreement between optical calculations and QE measurements for the K2CsSb on free suspended graphene and a graphene‐coated metal substrate further confirms the high‐quality interface between the photocathodes and graphene. Finally, a correlation between the QE and graphene quality as characterized by Raman spectroscopy suggests that a lower density of atomistic defects in the graphene films leads to higher QE of the deposited K2CsSb photocathodes.
- Home
- Search Results
- Page 1 of 1
Search for: All records
-
Total Resources2
- Resource Type
-
10010
- Availability
-
20
- Author / Contributor
- Filter by Author / Creator
-
-
Strom, Derek (2)
-
Abbasi, Rasha (1)
-
Abdalla, Hassan (1)
-
Acciari, Victor A. (1)
-
Ackermann, Markus (1)
-
Adams, Jenni (1)
-
Aguilar, Juanan (1)
-
Aharonian, Felix (1)
-
Ahlers, M. (1)
-
Ahrens, Maryon (1)
-
Ait-Benkhali, Faical (1)
-
Alispach, Cyril Martin (1)
-
Alves Junior, Antonio Augusto (1)
-
Amin, Najia Moureen (1)
-
An, Rui (1)
-
Andeen, Karen (1)
-
Anderson, Tyler (1)
-
Anguener, Oguzhan (1)
-
Ansoldi, Stefano (1)
-
Anton, Gisela (1)
-
- Filter by Editor
-
-
null (1)
-
& Spizer, S. M. (0)
-
& . Spizer, S. (0)
-
& Ahn, J. (0)
-
& Bateiha, S. (0)
-
& Bosch, N. (0)
-
& Brennan K. (0)
-
& Brennan, K. (0)
-
& Chen, B. (0)
-
& Chen, Bodong (0)
-
& Drown, S. (0)
-
& Ferretti, F. (0)
-
& Higgins, A. (0)
-
& J. Peters (0)
-
& Kali, Y. (0)
-
& Ruiz-Arias, P.M. (0)
-
& S. Spitzer (0)
-
& Spitzer, S. (0)
-
& Spitzer, S.M. (0)
-
(submitted - in Review for IEEE ICASSP-2024) (0)
-
-
Have feedback or suggestions for a way to improve these results?
!
Note: When clicking on a Digital Object Identifier (DOI) number, you will be taken to an external site maintained by the publisher.
Some full text articles may not yet be available without a charge during the embargo (administrative interval).
What is a DOI Number?
Some links on this page may take you to non-federal websites. Their policies may differ from this site.
-
Abstract -
Acciari, Victor A. ; Ansoldi, Stefano ; Antonelli, Lucio Angelo ; Arbet Engels, Axel ; Artero, Manuel ; Asano, Katsuaki ; Baack, Dominik ; Babic, Ana ; Baquero, Andrés ; Barres de Almeida, Ulisses ; et al ( , Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021))null (Ed.)