Year: 2025
Type: article
Abstract: As the Internet of Things (IoT) expands, more IoT devices will need to be powered by efficient and durable energy harvesters, both indoors and outdoors. Transition metal dichalcogenides (TMDs), such as MoS 2 , MoSe 2 , WS 2 , and WSe 2 , are promising materials for indoor photovoltaics (PV) due to their high absorption coefficients and self-passivated surfaces. Here, we assess the performance of single-junction multilayer (≥5 nm thick) TMD solar cells under various indoor lighting conditions with a realistic detailed balance model including material-specific optical absorption as well as radiative, Auger, and defect-assisted Shockley-Read-Hall recombination. TMD solar cells could achieve up to 36.5%, 35.6%, 11.2%, and 27.6% power conversion efficiency under fluorescent, light-emitting diode (LED), halogen, and low-light AM 1.5 G lighting, respectively, at 500 lux. Based on this, TMD solar cells could outperform commercial indoor PV technologies (e.g., amorphous silicon and dye-sensitized solar cells), suggesting their viability for future IoT energy solutions.
Source: Device
Institution: Stanford University
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $9,350
OpenAlex ID: W4408187733