As described in this report from HKW:
Scientists and thinkers have introduced the term technosphere to describe the mobilization and hybridization of energy, material, and environments into a planetary system on par with other spheres such as the atmosphere or biosphere. The term emphasizes the leading role of the technological within this global system. At the same time this term encompasses the enclosure of human populations, forests, cities, seas, and other traditionally non-technical entities within systems of technical management and productivity
Origin: the geologist Peter Haff coined that term in an article called “Humans and technology in the Anthropocene: Six rules” published in 2014 in the Anthropocene Review.