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Ambient Pressure Photoemission Spectroscopy

APS04: Scanning, surface photovoltage and surface photovoltage spectroscopy capabilities

The Ambient Pressure Photoemission Spectroscopy (APS) systems are KP Technology's newest addition to our large surface analysis range. The dual-mode APS systems measure the absolute work function of a material by photoemission in air, no vacuum is required. These systems hold domestic and international patents.

With an excitation range of 3.4 eV to 7.0 eV, the APS systems are capable of measuring the absolute work function of metals (accuracy: 0.05 eV) and the ionisation potential of semiconductors alongside measurement of the surface Fermi level with the Kelvin probe (accuracy: 0.001 eV).

With the addition of a surface photovoltage (SPV) and surface photovoltage spectroscopy (SPS), the full bands of semiconductors can be measured in one system; no other product can do this.

Latest materials and applications from publications

Perovskite solar cells, indium zinc tin oxide thin films, diamond electronics, organic solar cells, light-emitting electrochemical cells, organic transistors, alkali oxide thin films, semiconductors.

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Systems & specifications

APS01
APS02
APS03
APS04


APS01 APS02 APS03 APS04
Kelvin probe 3-axis scanning
Surface Photovoltage
Surface Photovoltage Specroscopy
Tip material / diameter 2 mm gold tip
CPD resolution 1 - 3 meV
Height control (auto) 25 mm automatic
Kelvin probe mode and PE mode CPD and photoemission measurements
CPD measurement time CPD measurements in <1 minute
PE resolution Full photoemission measurement
WF measurement time PE measurements in <5 minutes
DOS measurments Full access to DOS information
Optical system Colour camera with zoom and monitor for positioning
Oscilloscope Digital TFT oscilloscope for real time signal
Test sample Gold, aluminium, and silver test samples
Faraday enclosure base (mm) 450 x 450 mm optical and Faraday enclosure
Control supplied PC control with dedicated software
Patented technology US:8866505 / GB:2439439 / GB:2495998 / EU:2783205 / JP:6018645
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KP Technology
Burn Street, Wick, Caithness, KW1 5EH, Scotland

Telephone: +44 (0)1955 602 777
Fax: +44 (0)1955 602 555
Email: sales@kelvinprobe.com

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Ambient Pressure Photoemission Spectroscopy

APS01

APS02

APS03

APS04
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Ambient Pressure Photoemission Spectroscopy with Nitrogen Environment

APS04-N2-RH
View product
Relative Humidity Kelvin Probe

RHC010

RHC020

RHC030

RHC040
View product
Scanning Kelvin Probe

ASKP100100

ASKP200250

ASKP350350

SKP5050
View product
Single-Point Kelvin Probe

KP Mini

KP020
View product
Surface Photovoltage

SPS030

SPS040

SPV020
View product
Ultra-high Vacuum Kelvin Probe

UHVKP Corner Cube

UHVKP020-Manual

UHVKP020-Motorised
View product
Ultra-high Vacuum Scanning Kelvin Probe

UHVSKP2020
View product
Ultra-high Vacuum Ф4 Kelvin Probe

Ф4
View product


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