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From Lead Iodide to a Radical Form Lead‐Iodide Superlattice: High Conductance Gain and Broader Band for Photoconductive Response.
- Source :
-
Angewandte Chemie . 2/25/2019, Vol. 131 Issue 9, p2718-2721. 4p. - Publication Year :
- 2019
-
Abstract
- Superlattice materials offer new opportunities to modify optical and electrical properties of recently emerging 2D materials. The insertion of tetraethylbenzidine (EtDAB) into interlamination of the established 2D PbI2 semiconductor through a mild solution method yielded the first lead iodide superlattice, EtDAB⋅4PbI2 (EtDAB=tetraethylbenzidine), with radical and non‐radical forms. The non‐radical form has a non‐ionic structure that differs from the common ionic structures for inorganic–organic hybrid lead halides. The radical form shows five orders of magnitude greater conductance and broader photoconductive response range (UV/Vis → UV/Vis‐IR), than pure PbI2 and the non‐radical form of the superlattice. [ABSTRACT FROM AUTHOR]
- Subjects :
- *SUPERLATTICES
*ELECTRIC properties
*SEMICONDUCTORS
*PEROVSKITE
*HETEROSTRUCTURES
Subjects
Details
- Language :
- English
- ISSN :
- 00448249
- Volume :
- 131
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Angewandte Chemie
- Publication Type :
- Academic Journal
- Accession number :
- 134794217
- Full Text :
- https://doi.org/10.1002/ange.201812554