# US 2024/0206196 A1 · Indoor organic photovoltaic cell using pss-doped polyaniline as hole transport layer

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2024/0206196 A1
- Document ID: US20240206196A1
- Status: Published application
- Kind: A1
- Application number: 18/286,135
- Filed: 2021-04-30
- Published: 2024-06-20
- Earliest claimed: 2021-04-08
- Assignees: University of Seoul Industry Cooperation Foundation
- Applicants: University of Seoul Industry Cooperation Foundation
- Inventors: Hyeok KIM
- Web page: https://patentgrep.com/patent/US20240206196A1

## CPC

- H10K 30/86: Layers having high hole mobility, e.g. hole-transporting layers or electron-blocking layers
- H10K 30/50: Photovoltaic [PV] devices
- H10K 30/84: Layers having high charge carrier mobility
- H10K 30/30: comprising bulk heterojunctions, e.g. interpenetrating networks of donor and acceptor material domains
- H10K 85/111: {comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene}
- H10K 85/113: {Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene}
- H10K 85/215: {comprising substituents, e.g. PCBM}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

PSS-doped polyaniline (PANI), which is inexpensive, less acidic, and stable in water, is used as a hole transport material (HTM) of an organic photovoltaic (OPV) cell for efficiently collecting energy from indoor lighting. Therefore, the organic photovoltaic cell exhibits a transmittance of 90% or more. Also, a solar cell according to the present invention has improved environmental stability.

## Claims

### Claim 1

An indoor organic photovoltaic (OPV) cell for generating an electromotive force from indoor lighting, comprising:
a transparent electrode formed on a transparent substrate;
a hole transport layer formed on the transparent electrode;
an active layer formed on a upper surface of the hole transport layer and made of a P3HT:ICBA material; and
an upper electrode formed on the upper side of the active layer,
wherein the hole transport layer is made of a PSS-doped polyaniline (PANI:PSS) material.

### Claim 2 (depends on 1)

The indoor organic photovoltaic cell of claim 1, further comprising an intermediate layer configured to increase an electrostatic potential difference of the photovoltaic cell,
wherein the intermediate layer is formed between the active layer and the upper electrode, and is formed of a material selected from one of metals having a low work function value including Ca.

### Claim 3

A method of synthesizing PSS-doped polyaniline used as a hole transport material in an indoor organic photovoltaic (OPV) cell, comprising:
purifying aniline (AN) by vacuum distillation;
dissolving the purified aniline in ultrapure deionized water (DI);
adding PSS to the solution, followed by stirring;
mixing an ammonium peroxodisulfate (APS) solution with the AN-PSS solution,
followed by stirring; and
centrifuging the resulting PSS-doped PANI.