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United boron compound modification-based perovskite type solar cell and preparation method thereof

A solar cell, perovskite-based technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of complex process, high cost, restricting the development of perovskite-based solar cell technology, etc. Conducive to transmission, reducing the effect of interface recombination

Active Publication Date: 2018-09-14
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above methods are complicated and costly, which limits the development of perovskite-based solar cell technology.

Method used

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  • United boron compound modification-based perovskite type solar cell and preparation method thereof
  • United boron compound modification-based perovskite type solar cell and preparation method thereof
  • United boron compound modification-based perovskite type solar cell and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In the first step, use deionized water, acetone, optical glass cleaner, deionized water, and isopropanol to ultrasonically clean the FTO glass substrate (15Ω / □), dry it in an oven at 60°C for 4 hours, and then spin-coat it on the FTO surface TiO at a concentration of 5 mg / mL 2 Colloidal quantum dots, wherein the solvent used is a mixed solvent of methanol:chloroform=1:1 (volume ratio). The rotation speed of spin coating is 4000rpm, the spin coating time is 20s, and the acceleration is 2000rpm / s. Subsequently, the substrate was heated and annealed at 150° C. for 30 minutes.

[0032] In the second step, the TiO 2 Thin film substrate transferred to N 2 Atmosphere glove box, and immersed in the prepared C with a concentration of 10mg / mL 12 h 24 B 2 o 4 Soak in isopropanol solution at room temperature for 24 hours, fully adsorb C 12 h 24 B 2 o 4 on TiO 2 The surface of the film was washed with isopropanol solvent to remove excess C 12 h 24 B 2 o 4 . Transfer...

Embodiment 2

[0035] In the second step, the TiO 2 Thin film substrate transferred to N 2 Atmosphere glove box, and immersed in the prepared C with a concentration of 10mg / mL 10 h 20 B 2 o 4 Soak in isopropanol solution at room temperature for 24 hours, fully adsorb C 10 h 20 B 2 o 4 on TiO 2 The surface of the film was washed with isopropanol solvent to remove excess C 10 h 20 B 2 o 4 . Transfer the film substrate to a hot stage at 80°C and heat for 30 minutes to obtain a surface rich in Ti 3+ TiO 2 film. The preparation method of all the other steps is the same as that of Example 1. The photoelectric conversion efficiency of such perovskite solar cells can reach ∼17%.

Embodiment 3

[0037] In the second step, the TiO 2 Thin film substrate transferred to N 2 Atmosphere glove box, and immersed in the prepared B with a concentration of 10mg / mL 2 (OH) 4 Soak in isopropanol solution at room temperature for 24 hours, fully adsorb B 2 (OH) 4 on TiO 2 The surface of the film was washed with isopropanol solvent to remove excess B 2 (OH) 4 . Transfer the film substrate to a hot stage at 80°C and heat for 30 minutes to obtain a surface rich in Ti 3+ TiO 2 film. The preparation method of all the other steps is the same as that of Example 1. The photoelectric conversion efficiency of such perovskite solar cells can reach ∼17%.

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Abstract

The invention discloses a united boron compound modification-based perovskite type solar cell and a preparation method thereof. The solar cell comprises a planar type structure and a mesoporous type structure, wherein a metal oxide compact layer or mesoporous layer used as an electron transmission layer is modified by a united boron compound, so that the valence state of metal ions on the surfaceof a metal oxide is changed, surface N-type doping is implemented, and the carrier concentration is increased; meanwhile, a passivation effect is achieved, and the shape of a metal oxide thin film isfurther improved. The perovskite type solar cell with the united boron-modified electron transmission layer is relatively high in photoelectric conversion efficiency and high light stability.

Description

technical field [0001] The invention belongs to the technical field of photoelectric functional materials and devices, and in particular relates to a perovskite solar cell modified based on a biboron compound and a preparation method thereof. Background technique [0002] The rapid economic and social development has benefited from the widespread use of fossil fuels. However, the depletion crisis of fossil fuels and the increasing environmental pollution have prompted us to actively look for low-cost, clean and efficient renewable energy. Solar power generation is an emerging renewable energy technology, but the cost of silicon-based solar cells widely used at present is high and the preparation process is complicated. Therefore, it is urgent to discover and prepare new solar cells. Due to its excellent photoelectric performance, metal halide perovskite-based solar cells have achieved a leap in photoelectric conversion efficiency from 3.8% to 22.7% in just eight years since ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/30H10K71/311H10K71/40H10K30/151H10K2102/00Y02E10/549
Inventor 朱瑞杨晓宇涂用广龚旗煌
Owner PEKING UNIV
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