Journal
ADVANCED FUNCTIONAL MATERIALS
Volume 29, Issue 40, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201901476
Keywords
density functional theory; lamination; molecular dynamics; monolithic tandem; perovskite; silicon; transparent-conductive-adhesive
Categories
Funding
- Cluster of Excellence through Engineering of Advanced Materials (EAM)
- DFG at Erlangen University [GRK 1896]
- Joint Project Helmholtz-Institute Erlangen Nurnberg (HI-ERN) [DBF01253]
- Aufbruch Bayern initiative of the state of Bavaria (EnCN and Solar Factory of the Future)
- Solar Factory of the Future with the Energy Campus Nurnberg (EnCN)
- Real Colegio Complutense in Harvard
- Spanish Ministerio de Ciencia e Innovacion
- Tata Sons Limited - Alliance Agreement [A32391]
- FAS Division of Science, Research Computing Group at Harvard University
- Health Sciences Platform (HSP) at Tianjin University
- European Research Council (ERC) [804110]
- Spanish MINECO through the Excellence Unit Maria de Maeztu [MDM-2015-0538]
- Generalitat Valenciana [CIDEGENT/2018/001]
- Deutsche Forschungsgemeinschaft (DFG) [FLAG-ERA AB694/2-1]
- BMWi through the PersiST project [0324037C]
- BMBF [03SF0540]
- Solar Technologies go Hybrid (SolTech)
- Bavarian Equal Opportunities Sponsorship - Forderung von Frauen in Forschung und Lehre (FFL)
- German Federal Ministry of Education and Research (BMBF) [05K16WEB]
- Mexican National Council for Science and Technology (CONACYT)
- European Research Council (ERC) [804110] Funding Source: European Research Council (ERC)
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A multipurpose interconnection layer based on poly(3,4-ethylenedioxythiophene) doped with poly(styrene sulfonate) (PEDOT:PSS), and d-sorbitol for monolithic perovskite/silicon tandem solar cells is introduced. The interconnection of independently processed silicon and perovskite subcells is a simple add-on lamination step, alleviating common fabrication complexities of tandem devices. It is demonstrated experimentally and theoretically that PEDOT:PSS is an ideal building block for manipulating the mechanical and electrical functionality of the charge recombination layer by controlling the microstructure on the nano- and mesoscale. It is elucidated that the optimal functionality of the recombination layer relies on a gradient in the d-sorbitol dopant distribution that modulates the orientation of PEDOT across the PEDOT:PSS film. Using this modified PEDOT:PSS composite, a monolithic two-terminal perovskite/silicon tandem solar cell with a steady-state efficiency of 21.0%, a fill factor of 80.4%, and negligible open circuit voltage losses compared to single-junction devices is shown. The versatility of this approach is further validated by presenting a laminated two-terminal monolithic perovskite/organic tandem solar cell with 11.7% power conversion efficiency. It is envisioned that this lamination concept can be applied for the pairing of multiple photovoltaic and other thin film technologies, creating a universal platform that facilitates mass production of tandem devices with high efficiency.
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