What are the differences between heterojunction and multijunction materials?

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Shadrach Akinkuade

heterojunction is formed between different materials, while multijunction means more than one junction in a device.

Hamit Can

http://www.rci.rutgers.edu/~dbirnie/solarclass/MultijunctionLecture.pdf

Article Electrical Characteristic Measurement of the Fabricated CdSe...

Abu Kowsar

Multijunction solar cell is comprised of two or more sub-cell/(sublayer or p-n junction) of different bandgap semiconductor material. In most cases, sub-cells or sub-layers of multijunction solar cell are hetero-structure. On the other hand heterojunction is formed between different materials.