biostudies-literatureWarren ELSolar Energy Technologies ProgramBundesministerium f?r Wirtschaft und Energie1233-1242https://www.ebi.ac.uk/biostudies/studies/S-EPMC10906945biostudies-literatureUnknown5(4)Tandem and multijunction solar cells offer the only demonstrated path to terrestrial 1-sun solar cell efficiency over 30%. Three-terminal tandem (3TT) solar cells can overcome some of the limitations of two-terminal and four-terminal tandem solar cell designs. However, the coupled nature of the cells adds a degree of complexity to the devices themselves and the ways that their performance can be measured and reported. While many different configurations of 3TT devices have been proposed, there is no standard taxonomy to discuss the device structure or loading topology. This Perspective proposes a taxonomy for 3TT solar cells to enable a common nomenclature for discussing these devices and their performance. It also provides a brief history of three-terminal devices in the literature and deACS energy lettersA Taxonomy for Three-Terminal Tandem Solar Cells.PMC10906945FKZ0324040DE-AC36-08GO28308SETP DE-EE00034911Warren ELRienacker MMcMahon WEPeibst RVanSant KTWhitehead RCTamboli ACfalseA Taxonomy for Three-Terminal Tandem Solar Cells.Tandem and multijunction solar cells offer the only demonstrated path to terrestrial 1-sun solar cell efficiency over 30%. Three-terminal tandem (3TT) solar cells can overcome some of the limitations of two-terminal and four-terminal tandem solar cell designs. However, the coupled nature of the cells adds a degree of complexity to the devices themselves and the ways that their performance can be measured and reported. While many different configurations of 3TT devices have been proposed, there is no standard taxonomy to discuss the device structure or loading topology. This Perspective proposes a taxonomy for 3TT solar cells to enable a common nomenclature for discussing these devices and their performance. It also provides a brief history of three-terminal devices in the literature and de2020-01-01T00:00:00Z2020 Apr2025-04-18T17:17:48.397Z2025-04-07T04:50:17.669ZS-EPMC109069453843579810.1021/acsenergylett.0c00068