Fill Factor Calculator

Fill Factor Calculator calculator can be used to calculate the fill factor of a solar cell based on its current-voltage characteristics under illumination.

Input Parameters

Calculation Results

Fill Factor Calculation

Fill Factor (FF) = (Isc × Voc) / Pmax

Where:
Isc = Short-Circuit Current
Voc = Open-Circuit Voltage
Pmax = Maximum Power (Isc × Voc × FF)

Fill Factor (FF): -

Maximum Power (Pmax): - mW

Solar Cell Efficiency

Efficiency (η) = FF × (Voc / Voc,ref) × (Isc / Isc,ref)

Where:
Voc,ref = Reference Open-Circuit Voltage (typically 0.6V for silicon cells)
Isc,ref = Reference Short-Circuit Current (depends on cell size and illuminance)

Efficiency (η): -%

Fill Factor Calculator Calculator Usage Guide

Learn how to use the Fill Factor Calculator calculator and its working principles

What is Fill Factor?

The Fill Factor (FF) is a key parameter that characterizes the performance of a solar cell. It is defined as the ratio of the maximum power output (Pmax) of a solar cell to the product of its short-circuit current (Isc) and open-circuit voltage (Voc). A higher fill factor indicates a more efficient solar cell.

How to Use This Calculator

  1. Enter the illuminance (lux) under which measurements were taken.
  2. Input the short-circuit current (Isc) in milliamperes (mA).
  3. Provide the open-circuit voltage (Voc) in volts (V).
  4. Enter the maximum power point current (Imp) in milliamperes (mA).
  5. Enter the maximum power point voltage (Vmp) in volts (V).
  6. Click the "Calculate" button to compute the fill factor and efficiency.

Principle of Operation

The fill factor is calculated using the formula:

FF = (Isc × Voc) / Pmax

Where Pmax = Imp × Vmp is the maximum power output of the solar cell.

Interpreting Results

A typical fill factor for a silicon solar cell ranges from 0.7 to 0.85. Values outside this range may indicate issues with the solar cell or measurement conditions.

Applications

This calculator is useful for:

  • Characterizing solar cells during manufacturing
  • Assessing the performance of existing solar panels
  • Comparing different solar technologies
  • Research and development in photovoltaic systems