Repository logo

Infoscience

  • English
  • French
Log In
Logo EPFL, École polytechnique fédérale de Lausanne

Infoscience

  • English
  • French
Log In
  1. Home
  2. Academic and Research Output
  3. Patents
  4. Hole transport material, synthesis thereof, and solar cell
 
patent

Hole transport material, synthesis thereof, and solar cell

Liu, Yuhang  
•
Zakeeruddin, Shaik Mohammed  
•
Graetzel, Michael  
Show more
2022

The organic small molecule 4,4',4",4"'-(5,5-dimethoxycyclopenta-1,3-diene-1,2,3,4-tetrayl)tetrakis(N,N-bis(4-methoxyhenyl)aniline (CPDA 1), shows electrochemical properties very close to spiro-OMeTAD indicating a high compatibility with PSC systems for its use as a hole transport material (HTM). The implementation of the cyclopentadiene dimethyl acetale core helps to red shift the absorption onset of the films as well as provide a flexible spatial configuration of the molecule, which is essential for optimum film forming properties. Transient and steady state emission analysis as well as hole mobility measurements indicate that the new HTM allows a better charge extraction, transport and separation than the spiro-OMeTAD reference compound. PSCs based on the new CPDA 1 show a PCE close to 23% with lower hysteresis than its analogue. Stability studies performed under ambient, heated and humid conditions all showed that CPDA 1 is over-performing spiro-OMeTAD. Furthermore the production cost of CPDA 1 is about 10 times lower than that of spiro-OMeTAD, contributing to render PSCs more affordable.

  • Details
  • Metrics
Type
patent
EPO Family ID

71944004

Author(s)
Liu, Yuhang  
Zakeeruddin, Shaik Mohammed  
Graetzel, Michael  
Bauer, Michael
Bäuerle, Peter
Note

Alternative title(s) : (de) Lochtransportmaterial, synthese davon und solarzelle (fr) Matériau de transport de trous, synthèse correspondante et cellule solaire

TTO classification

TTO:5.0061

EPFL units
AVP-R-TTO  
DOICountry codeKind codeDate issued

EP3950661

EP

B1

2024-06-19

US11680035

US

B2

2023-06-20

EP3950661

EP

A1

2022-02-09

US2022033342

US

A1

2022-02-03

Available on Infoscience
March 1, 2022
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/185973
Logo EPFL, École polytechnique fédérale de Lausanne
  • Contact
  • infoscience@epfl.ch

  • Follow us on Facebook
  • Follow us on Instagram
  • Follow us on LinkedIn
  • Follow us on X
  • Follow us on Youtube
AccessibilityLegal noticePrivacy policyCookie settingsEnd User AgreementGet helpFeedback

Infoscience is a service managed and provided by the Library and IT Services of EPFL. © EPFL, tous droits réservés