Science· 2012Q1
Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide Perovskites
- 10,587citations
- Q1SCImago
- 2012year
Short summary
A novel meso-superstructured perovskite solar cell achieves a 10.9% power conversion efficiency, overcoming fundamental energy loss mechanisms in low-cost photovoltaics.
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Key points
- Achieved 10.9% power conversion efficiency in a single-junction perovskite solar cell.
- Utilizes a meso-superstructured design with mesoporous alumina as an inert scaffold.
- Minimizes fundamental energy losses by structuring the absorber and directing charge transport.
- Generated open-circuit photovoltages over 1.1 volts despite a 1.55 eV band gap.
AI-generated from the title and abstract; the full text is not read.
Abstract
The energy costs associated with separating tightly bound excitons (photoinduced electron-hole pairs) and extracting free charges from highly disordered low-mobility networks represent fundamental losses for many low-cost photovoltaic technologies. We report a low-cost, solution-processable solar cell, based on a highly crystalline perovskite absorber with intense visible to near-infrared absorptivity, that has a power conversion efficiency of 10.9% in a single-junction device under simulated full sunlight. This "meso-superstructured solar cell" exhibits exceptionally few fundamental energy losses; it can generate open-circuit photovoltages of more than 1.1 volts, despite the relatively narrow absorber band gap of 1.55 electron volts. The functionality arises from the use of mesoporous alumina as an inert scaffold that structures the absorber and forces electrons to reside in and be transported through the perovskite.
The authors' abstract, as published at the source. Science, 2012 · DOI ↗
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Field: Electrical and Electronic Engineering
Electrical and Electronic EngineeringEngineering