Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for improving photoelectric conversion efficiency of perovskite solar cell

A technology of photoelectric conversion efficiency and solar cells, which is applied in the field of solar cells, can solve the problems of poor battery performance and large PCBM roughness, etc., and achieve the effects of improving photoelectric conversion efficiency and open circuit voltage, excellent quality, and excellent photoelectric conversion efficiency

Active Publication Date: 2018-11-16
NANJING UNIV OF POSTS & TELECOMM
View PDF10 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the shortcomings of poor battery performance caused by the large roughness of the PCBM prepared on the perovskite film in the above technology and poor contact with the counter electrode, and prepare a device with excellent performance, the purpose of the present invention is to provide a Methods to improve the electrical conversion efficiency of perovskite solar cells

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving photoelectric conversion efficiency of perovskite solar cell
  • Method for improving photoelectric conversion efficiency of perovskite solar cell
  • Method for improving photoelectric conversion efficiency of perovskite solar cell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The steps of this embodiment are as follows:

[0040] (1) Clean the etched ITO (indium tin oxide) conductive glass, then dry it with nitrogen to obtain a clean ITO substrate;

[0041] (2) Spin-coat commercial PEDOT:PSS (4038) on the ITO substrate, anneal, and the substrate is recorded as ITO / PEDOT:PSS;

[0042] (3) Perovskite precursor solution PbI 2 Configuration: to PbI 2 Add DMF (dimethylformamide) solution to the powder, PbI 2 The solid-liquid ratio of powder to DMF is 416mg / mL;

[0043] (4) Preparation of pure MAI and perovskite precursor solution MAI mixed with AHP (ammonium hypophosphite):

[0044] (4.1) Add MAI powder in IPA, and wait to stir to obtain pure MAI solution; Wherein, the solid-liquid ratio of MAI powder and IPA is 45mg / mL;

[0045] (4.2) Add AHP powder in IPA, after being stirred uniformly, join the IPA solution containing AHP in the MAI powder, stir evenly, promptly obtain the perovskite precursor MAI solution that is mixed with AHP; Wherein, ...

Embodiment 2

[0054] The pure MAI solution that configures in step (4) is spin-coated on the substrate that step (5) obtains, obtains the substrate in step (6), in the step (8) and (10) do not do in the present embodiment .

Embodiment 3

[0056] The MAI solution that is added with AHP configured in step (4) is spin-coated on the substrate that step (5) obtains, obtains the substrate in step (6), in the step (8) and (10) in the present embodiment don't do it.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a method for improving photoelectric conversion efficiency of a perovskite solar cell. The method comprises the following steps of (a) adding ammonium hypophosphite into a perovskite precursor solution, and performing dissolving to form a mixed solution; (b) spinning the mixed solution obtained in the step (a) onto a perovskite precursor substrate, and performing heating toform a perovskite film; and (c) spinning a hole transmission layer on the perovskite film obtained in the step (b), spinning a layer of interface modification material again, evaporating a metal electrode, and performing assembly to form a perovskite solar cell device. By the method, the perovskite thin film with excellent quality can be prepared, meanwhile, the perovskite thin film is more matched with an electrode function, and the fabricated perovskite solar cell device can obtain excellent photoelectric conversion efficiency.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and in particular relates to a method for improving the photoelectric conversion efficiency of a perovskite solar cell. Background technique [0002] The photoelectric conversion of solar energy is realized by using solar cells. Organic-inorganic perovskite solar cells, as a new type of third-generation solar cell, have developed at an astonishing speed. In the few years from 2009 to 2018, the photoelectric conversion efficiency has increased rapidly. The latest report It has reached 22.1%. Solar cells based on this material are called perovskite solar cells, or PSCs for short. [0003] PSCs are divided into inverted and positive solar cells according to the relative positions of the electron transport layer and the hole transport layer. )(PEDOT:PSS) and poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine](PTAA), the main electron transport materials are [6,6]-phenyl C61 butyl Acrylic acid meth...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/48H01L51/42H01L51/46
CPCH10K71/12H10K30/30H10K2102/00Y02E10/549
Inventor 赖文勇雷刚徐巍栋黄维
Owner NANJING UNIV OF POSTS & TELECOMM