INDUSTRY COMPONENT

Resistive Layer

A resistive layer is a thin film component in position-sensitive detectors that converts incident light or particle position into electrical signals through resistance variation.

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Component Specifications

Definition
The resistive layer is a critical component in position-sensitive detectors (PSDs), typically consisting of a uniform thin-film resistive material deposited on a substrate. It functions as a continuous position-to-voltage converter by generating position-dependent voltage outputs when current flows through it and light or particles strike specific locations, enabling precise spatial measurement of incident radiation or particles.
Working Principle
The resistive layer operates on the principle of resistive division. When a bias voltage is applied across the layer, incident light or particles create localized charge carriers at the strike point. The resulting current divides proportionally along the resistive paths to electrodes at the layer's edges, producing output voltages that correspond linearly to the position of the incident event, allowing accurate position determination through signal processing.
Materials
Typically made from thin-film materials such as amorphous silicon (a-Si), indium tin oxide (ITO), or metal oxides (e.g., SnO2) deposited on glass or silicon substrates via sputtering or chemical vapor deposition, with sheet resistances ranging from 1 kΩ/sq to 10 MΩ/sq and thicknesses of 0.1-1 μm.
Technical Parameters
  • Thickness 0.1-1 μm
  • Active Area Up to 50 mm x 50 mm
  • Response Time <1 μs
  • Spectral Range 300-1100 nm
  • Linearity Error <1%
  • Sheet Resistance 1 kΩ/sq to 10 MΩ/sq
Standards
ISO 10110, DIN 58141

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Resistive Layer.

resistive layer position-sensitive detector PSD component thin-film resistor spatial measurement electronic sensor optical detector industrial sensors Resistive Layer in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Position-Sensitive Detector

An optoelectronic device that detects the position of a light spot on its active surface and outputs corresponding electrical signals.

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Engineering Analysis

Risks & Mitigation
  • Delamination due to thermal stress
  • Resistance drift over time
  • Contamination affecting accuracy
  • Electrode corrosion
FMEA Triads
Trigger: Thermal cycling or moisture ingress
Failure: Layer delamination or cracking
Mitigation: Use robust adhesion layers and environmental sealing
Trigger: Material degradation or aging
Failure: Resistance drift leading to measurement errors
Mitigation: Implement regular calibration and use stable materials

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.5% for linearity, ±2% for resistance
Test Method
ISO 10110 for optical properties, electrical testing with four-point probe and laser scanning

Buyer Feedback

★★★★☆ 4.8 / 5.0 (10 reviews)

"Testing the Resistive Layer now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Resistive Layer meets all ISO standards."

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Frequently Asked Questions

What is the primary function of a resistive layer in a position-sensitive detector?

The resistive layer converts the position of incident light or particles into electrical signals by utilizing resistance variation, enabling precise spatial measurement in applications like laser alignment and particle tracking.

How does material choice affect resistive layer performance?

Material selection (e.g., ITO for transparency, a-Si for sensitivity) impacts key parameters like sheet resistance, response time, spectral range, and durability, influencing accuracy and suitability for specific environments such as high-temperature or corrosive conditions.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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