Interfacial Connections between Organic Perovskite/n + Silicon/Catalyst that Allow Integration of Solar Cell and Catalyst for Hydrogen Evolution from Water
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- National Renewable Energy Laboratory 15013 Denver West Parkway Golden CO 80401 USA
- Department of Biomedical Engineering, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- Department of Physics and Astronomy, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- Department of Physics and Astronomy, Rutgers The State University of New Jersey Piscataway NJ 08854 USA, Department of Materials Science &, Engineering, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
- Department of Chemistry and Chemical Biology, Rutgers The State University of New Jersey Piscataway NJ 08854 USA, Waksman Institute, Rutgers The State University of New Jersey Piscataway NJ 08854 USA
The rapidly increasing solar conversion efficiency (PCE) of hybrid organic–inorganic perovskite (HOIP) thin‐film semiconductors has triggered interest in their use for direct solar‐driven water splitting to produce hydrogen. However, application of these low‐cost, electronic‐structure‐tunable HOIP tandem photoabsorbers has been hindered by the instability of the photovoltaic‐catalyst‐electrolyte (PV+E) interfaces. Here, photolytic water splitting is demonstrated using an integrated configuration consisting of an HOIP/n + silicon single junction photoabsorber and a platinum (Pt) thin film catalyst. An extended electrochemical (EC) lifetime in alkaline media is achieved using titanium nitride on both sides of the Si support to eliminate formation of insulating silicon oxide, and as an effective diffusion barrier to allow high‐temperature annealing of the catalyst/TiO 2 ‐protected‐n + silicon interface necessary to retard electrolytic corrosion. Halide composition is examined in the (FA 1‐x Cs x )PbI 3 system with a bandgap suitable for tandem operation. A fill factor of 72.5% is achieved using a Spiro‐OMeTAD‐hole‐transport‐layer (HTL)‐based HOIP/n + Si solar cell, and a high photocurrent density of −15.9 mA cm −2 (at 0 V vs reversible hydrogen electrode) is attained for the HOIP/n + Si/Pt photocathode in 1 m NaOH under simulated 1‐sun illumination. While this thin‐film design creates stable interfaces, the intrinsic photo‐ and electro‐degradation of the HOIP photoabsorber remains the main obstacle for future HOIP/Si tandem PEC devices.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO (United States); Rutgers University, Piscataway, NJ (United States)
- Sponsoring Organization:
- USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE), Office of Sustainable Transportation. Hydrogen Fuel Cell Technologies Office (HFTO)
- Grant/Contract Number:
- AC36-08GO28308; EE0008083
- OSTI ID:
- 1961920
- Alternate ID(s):
- OSTI ID: 1963922
OSTI ID: 1986590
OSTI ID: 1995905
- Report Number(s):
- NREL/JA-5900-85411; 2301196
- Journal Information:
- Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 25 Vol. 33; ISSN 1616-301X
- Publisher:
- Wiley Blackwell (John Wiley & Sons)Copyright Statement
- Country of Publication:
- Germany
- Language:
- English