Perovskite solar cell and a preparation method

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of perovskite active layer energy level mismatch, device open circuit voltage and low photoelectric conversion efficiency, etc., to improve the open circuit voltage. VOC and photoelectric conversion efficiency, solve poor stability, improve the effect of energy level matching

Active Publication Date: 2019-05-21
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This patented technology uses an organomolybdenum compound called PMDOPT (phenyltrimethoxysilane) or other substances that are added during manufacturing processes for improving the quality control over layers formed on top of each other. These layers help optimize charge transfer from holes into light harvesting sites while also reducing unwanted reactions such as decomposition caused by moisture ingress at different points along their length. By doing this, these technologies enhance the overall effectiveness and lifespan of Perovsky Solar Cells (PSC).

Problems solved by technology

This patents discusses different methods for producing thin-film type photochemistry devices (called solar cell) that use less expensive raw materials than traditional semiconductor processes such as vacuum deposition or chemical vapor phase growth techniques. These technical improvements make them more efficient at converting incident radiation into electrical power compared to older technologies like crystals.

Method used

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  • Perovskite solar cell and a preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0030] PbI 2 and CH 3 NH 3 I is dissolved in N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) solution in a molar ratio of 1:1, the volume ratio of the two solvents is 10:1, and the mixed solution is heated at 60°C Stir evenly at high temperature for 2 hours to produce CH with a concentration of 1.25mol / L 3 NH 3 PB 3 solution, ready to use. Vanadium triisopropoxide (C 9 h 21 o 4 V) Dissolve in isopropanol (IPA) at a volume ratio of 1:300, stir the mixed solution at room temperature for 30 min, then mix it with PEDOT:PSS at a volume ratio of 1:2, and stir the mixed solution at room temperature 30min, prepared PEDOT:PSS and C 9 h 21 o 4 V-IPA blended solution, ready to use. Disperse PCBM in chlorobenzene to a concentration of 6 mg / mL and 20 mg / mL, and stir at room temperature for 24 hours to obtain a PCBM solution for use.

[0031] Sonicate the etched ITO conductive glass twice for 15 minutes with the lotion solution, deionized water, acetone, and ethano

Embodiment 2

[0034] PbI 2 and CH 3 NH 3 I is dissolved in N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) solution in a molar ratio of 1:1, the volume ratio of the two solvents is 10:1, and the mixed solution is heated at 60°C Stir evenly at high temperature for 2 hours to produce CH with a concentration of 1.25mol / L 3 NH 3 PB 3 solution, ready to use. Vanadium triisopropoxide (C 9 h 21 o 4 V) Dissolve in isopropanol (IPA) at a volume ratio of 1:300, and stir the mixed solution at room temperature for 30 minutes, then mix it with PEDOT:PSS at a volume ratio of 1:2, and stir the mixed solution at room temperature 30min, prepared PEDOT:PSS and C 9 h 21 o 4 V-IPA blended solution, ready to use. Disperse PCBM in chlorobenzene to a concentration of 6 mg / mL and 20 mg / mL, and stir at room temperature for 24 hours to obtain a PCBM solution for use.

[0035] Sonicate the etched ITO conductive glass twice for 15 minutes with the lotion solution, deionized water, acetone, an

Embodiment 3

[0038] PbI 2 and CH 3 NH 3 I is dissolved in N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) solution in a molar ratio of 1:1, the volume ratio of the two solvents is 10:1, and the mixed solution is heated at 60°C Stir evenly at high temperature for 2 hours to produce CH with a concentration of 1.25mol / L 3 NH 3 PB 3 solution, ready to use. Vanadium triisopropoxide (C 9 h 21 o 4 V) Dissolve in isopropanol (IPA) at a volume ratio of 1:300, stir the mixed solution at room temperature for 30 min, then mix it with PEDOT:PSS at a volume ratio of 1:2, and stir the mixed solution at room temperature 30min, prepared PEDOT:PSS and C 9 h 21 o 4 V-IPA blended solution, ready to use. Disperse PCBM in chlorobenzene to a concentration of 6 mg / mL and 20 mg / mL, and stir at room temperature for 24 hours to obtain a PCBM solution for use.

[0039] Sonicate the etched ITO conductive glass twice for 15 minutes with the lotion solution, deionized water, acetone, and ethano

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Abstract

The invention discloses a perovskite solar cell and a preparation method. The solar cell comprises a transparent substrate layer, a transparent anode layer, a layer gradient hole transport layer, a perovskite light absorption layer, an electron transport layer, an electron buffer layer and a metal cathode layer, which are arranged from bottom up, wherein the above layers are mainly prepared by anevaporation process. The solar cell provided by the invention has high open circuit voltage VOC and photoelectric conversion efficiency PCE, the maximum efficiency reaching 16.8%, the open circuit voltage reaching 1.05V and good stability.

Description

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Claims

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Application Information

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Owner NANJING UNIV OF POSTS & TELECOMM
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