Perovskite solar cell
By introducing a 2-(4'-tert-butylphenyl)-5-(4'-biphenyl)-1,3,4-oxadiazole passivation layer into perovskite solar cells, the instability of perovskite solar cells under external conditions was solved, the charge separation and transport efficiency was improved, and the photoelectric conversion efficiency was increased.
CN224473677UActive Publication Date: 2026-07-07旗滨新能源发展(深圳)有限责任公司
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Patent Information
- Application Number
- CN202521024352.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-22
- Publication Date
- 2026-07-07
- Estimated Expiration
- 2035-05-22
AI Technical Summary
Technical Problem
Existing perovskite solar cells are unstable under external conditions such as light, heat, moisture, and oxygen, and have ion migration and carrier recombination centers, which leads to performance degradation.
Method used
A 2-(4'-tert-butylphenyl)-5-(4'-biphenyl)-1,3,4-oxadiazole layer is placed between the perovskite layer and the electron transport layer as a passivation layer to cover the defect sites of the perovskite layer and adjust the energy level structure of the electron transport layer to optimize charge transport.
Benefits of technology
It improves the separation and transport efficiency of photogenerated carriers, and enhances the stability and photoelectric conversion efficiency of the device.
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Abstract
The utility model discloses a perovskite solar cell relates to the technical field of solar cell, perovskite solar cell includes first electrode layer, hole transport layer, perovskite layer, passivation layer, electron transport layer and second electrode layer who sets gradually, wherein, passivation layer includes 2-(4'-tert butyl phenyl)-5-(4'-diphenyl)-1,3,4-oxadiazole layer. Through setting 2-(4'-tert butyl phenyl)-5-(4'-diphenyl)-1,3,4-oxadiazole layer between perovskite layer and electron transport layer, make up the defect site of perovskite layer, reduce charge recombination, can also adjust the energy level structure of electron transport layer, optimize the charge transport between perovskite layer and electron transport layer, thereby improve the separation and transport efficiency of photoinduced carrier.
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