Perovskite solar cell and preparing method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as high cost, poor film formation, and poor repeatability stability, and achieve the effects of improving quality, improving crystal phase quality, and optimizing interface

Active Publication Date: 2019-11-15
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of PC61BM has the problems of high cost, poor film formation, and poor repeatability and stability.

Method used

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  • Perovskite solar cell and preparing method thereof
  • Perovskite solar cell and preparing method thereof
  • Perovskite solar cell and preparing method thereof

Examples

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preparation example Construction

[0035] The present invention also provides a preparation method for preparing the above-mentioned perovskite solar cell, comprising the following steps:

[0036] Step 1: Place the substrate with transparent electrodes in deionized water, acetone, and ethanol in sequence for ultrasonic cleaning, and use ozone plasma to clean after drying;

[0037] Step 2: Using ethanol as a solvent, prepare a 5 mg / mL nano-titanium dioxide solution, spin-coat the nano-titanium dioxide solution on the transparent electrode at a spin-coating speed of 4000 rpm, and then perform annealing treatment to obtain an electron transport layer;

[0038] Step 3: Using chlorobenzene as a solvent, configure a polymer solution with a concentration of 1 mg / mL, spin-coat the polymer solution on the electron transport layer at a spin-coating speed of 3000 rpm, and then perform annealing treatment to obtain an interface modification layer. The polymer solution is polystyrene solution, polymethyl methacrylate soluti...

Embodiment 1

[0049] A perovskite solar cell, comprising from bottom to top: a substrate, a transparent electrode, an electron transport layer, an interface modification layer, a perovskite light-absorbing layer, a hole transport layer, and a top electrode;

[0050] The substrate is a glass substrate; the transparent electrode is an indium tin oxide film;

[0051] The electron transport layer is a nano-titanium dioxide thin film, and the thickness of the electron transport layer is 40nm;

[0052] The interface modification layer is a polymethylmethacrylate film, and the thickness of the interface modification layer is 8nm;

[0053] The specific composition of the perovskite light-absorbing layer is: Cs 0.05 FA 0.81 MA 0.14 PB 2.55 Br 0.45 ;

[0054] The hole transport layer is an organic or inorganic hole transport film with higher hole transport properties;

[0055] The top electrode is an electrode that is composited with silver and a dielectric layer and has the function of capturin...

Embodiment 2

[0058] A perovskite solar cell, comprising from bottom to top: a substrate, a transparent electrode, an electron transport layer, an interface modification layer, a perovskite light-absorbing layer, a hole transport layer, and a top electrode;

[0059] The substrate is a glass substrate; the transparent electrode is a fluorine tin oxide film;

[0060] The electron transport layer is a nano-titanium dioxide thin film, and the thickness of the electron transport layer is 30nm;

[0061] The interface modification layer is a polyvinyl alcohol (PVA) film, and the thickness of the interface modification layer is 9nm;

[0062] The specific composition of the perovskite light-absorbing layer is: Cs 0.05 FA 0.81 MA 0.14 PB 2.55 Br 0.45 ;

[0063] The hole transport layer is an inorganic hole transport film with higher hole transport properties;

[0064] The top electrode is an electrode composed of aluminum and a dielectric layer with the function of capturing electrons;

[006...

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Abstract

The invention discloses a perovskite solar cell, which belongs to the technical field of solar cells. The perovskite solar cell includes a substrate, a transparent electrode, an electron transport layer, an interface modification layer, a perovskite light absorbing layer, a hole transport layer and a top electrode sequentially from bottom to top, wherein the electron transport layer is a nano titanium dioxide film; and the interface modification layer is a polymer film. The invention also discloses a preparing method for the perovskite solar cell. According to the perovskite solar cell, through arranging the interface modification layer of the polymer film on the electron transport layer, the interface quality is improved; and the crystal phase quality of the perovskite is improved throughreduction of surface energy, the interface is further optimized, the quality of the perovskite light absorbing layer is improved, the open circuit voltage and the filling factor of the device are effectively improved, and the energy conversion efficiency of the solar cell is thus significantly improved.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a perovskite solar cell and a preparation method thereof. Background technique [0002] With the vigorous development of the optoelectronic field, the characteristics of high power conversion efficiency (PCE), low-cost manufacturing process and compatibility with flexible technology of perovskite solar cells (Perovskite Solar Cells, PVSCs) fully meet the commercial requirements and have been favored by the whole world. The attention of the world has aroused the research interest of many scholars. The energy conversion efficiency of perovskite solar cells produced in recent years has also gradually increased, gradually approaching the energy conversion efficiency of commercial silicon-based solar cells. This can be attributed to the unique properties of perovskites, such as large charge carrier mobility and long charge carrier diffusion length. [0003] Since the...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/00H10K30/10H10K30/80Y02E10/549
Inventor 甄红宇庄启鑫邹顶游国峰凌启淡
Owner FUJIAN NORMAL UNIV
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