Iodine- and oxygen-free sensitization process for VPD-PbS:IO detectors

Uncooled lead salt detectors have significant advantages in developing the next generation of infrared detectors with SWaP3 features. Herein, a one-step pure nitrogen (N2) sensitized process is proposed to simplify the fabrication process for a wafer-scale lead sulfide (PbS) film fabricated by a mod...

Full description

Saved in:
Bibliographic Details
Published in:Journal of alloys and compounds 2025-01, Vol.1010, p.177854, Article 177854
Main Authors: Zhang, Guodong, Yang, Yiming, Qiu, Jijun, Huang, Deping, Zhou, Dahua, Leng, Chongqian, Shi, Haofei
Format: Article
Language:English
Subjects:
Iodine-free
Oxygen-free
PbS
Sensitization
Uncooled infrared detector
Vapor physical deposition
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Uncooled lead salt detectors have significant advantages in developing the next generation of infrared detectors with SWaP3 features. Herein, a one-step pure nitrogen (N2) sensitized process is proposed to simplify the fabrication process for a wafer-scale lead sulfide (PbS) film fabricated by a modified low-temperature vapor physical deposition (VPD). A room-temperature peak detectivity of 4 × 1010 Jones is achieved after one-step pure N2 sensitization process carried out for VPD-PbS:IO films, which is comparable to the detectors fabricated from the standard chemical bath deposition (CBD) process. The VPD fabrication technology with an iodine-free sensitization process provides an available route for promoting the commercial application of uncooled infrared detectors. •Wafer-scale lead salt film technology.•Iodine- and oxygen-free sensitization process.•A simplified fabrication process for uncooled PbS NIR detector.•Morphology evolution model of sensitized PbS films.
ISSN:0925-8388
DOI:10.1016/j.jallcom.2024.177854