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US 12,238,945 B2Granted
Dynamic urea bond-based passivators of perovskite
AssigneeThe University of Hong Kong
InventorsShien Ping Feng, Wei Ting Wang
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Abstract
Disclosed is a passivated perovskite structure containing a perovskite layer; and a hindered urea bond-based Lewis acid-base containing layer adjacent the perovskite layer. Also disclosed are solar cells containing the passivated perovskite structure.
Claims18
A passivated perovskite structure, comprising:
- a perovskite layer;
- and
- a hindered urea bond-based Lewis acid-base containing layer adjacent the perovskite layer,
- wherein the hindered urea bond-based Lewis acid-base containing layer comprises a hindered urea bond-based Lewis acid-base having the formula:
- wherein R1 is selected from
- x is selected from 1 to 5;
- R2 is selected from
- R3 is —CxH2x—, where x is selected from 1 to 5;
- and R4 is a halide.
6 more elements
A method of passivating a perovskite layer, comprising:
- forming a hindered urea bond-based Lewis acid-base containing layer adjacent the perovskite layer,
- wherein the hindered urea bond-based Lewis acid-base containing layer comprises a hindered urea bond-based Lewis acid-base having the formula:
- wherein R1 is selected from
- x is selected from 1 to 5;
- R2 is selected from
- R3 is —CxH2x—, where x is selected from 1 to 5;
- and R4 is a halide.
4 more elements
A perovskite solar cell, comprising:
- a first electrode;
- a hole transport layer adjacent the first electrode;
- a second electrode;
- an electron transfer layer adjacent the second electrode;
- a perovskite layer between the hole transport layer and the electron transfer layer;
- and
- a hindered urea bond-based Lewis acid-base containing layer adjacent the perovskite layer,
- wherein the hindered urea bond-based Lewis acid-base containing layer comprises a hindered urea bond-based Lewis acid-base having the formula:
- wherein R1 is selected from
- x is selected from 1 to 5;
- R2 is selected from
- R3 is —CxH2x—, where x is selected from 1 to 5;
- and R4 is a halide.
10 more elements
Dependencies are inferred from the claim text.