Improved power conversion efficiency of conducting polymer solar cells via incorporation of a DNA-CTMA electron blocking interlayer

The power conversion efficiency (PCE) of conducting polymer solar cells (PSC) has been found to increase significantly by incorporating a Deoxyribonucleic acid - hexadecyltrimethylammonium chloride (DNA- CTMA) electron blocking interlayer (EBL) between the hole transport layer (HTL) and poly(3-hexyl...

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Bibliographic Details
Main Authors: Nitika, Dixit, Shiv Kumar, Bhatnagar, Chhavi, Bahal, B. M., Kumari, Anita, Bhatnagar, P. K.
Format: Conference Proceeding
Language:English
Subjects:
Blocking
Butyric acid
Conducting polymers
Deoxyribonucleic acid
DNA
Electrons
Energy conversion efficiency
Interlayers
Molecular orbitals
Photovoltaic cells
Solar cells
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Summary:The power conversion efficiency (PCE) of conducting polymer solar cells (PSC) has been found to increase significantly by incorporating a Deoxyribonucleic acid - hexadecyltrimethylammonium chloride (DNA- CTMA) electron blocking interlayer (EBL) between the hole transport layer (HTL) and poly(3-hexylthiophene) (P3HT): [6,6]-phenyl C71 butyric acid methyl ester (PC71BM). The idea is to block the unwanted electrons reaching to PEDOT:PSS and ITO anode. The photo generated electrons from lowest unoccupied molecular orbital (LUMO) level (2.9 eV) of P3HT face high barrier height towards PEDOT: PSS due to 0.9eV LUMO level of DNA. The DNA-CTMA EBL reduces the non-geminate recombination at the HTL and P3HT: PC71BM interface resulting in significant enhancement∼33% of PCE.
ISSN:0094-243X
1551-7616
DOI:10.1063/5.0025721