Cyanine dye acting both as donor and acceptor in heterojunction photovoltaic devices

2003 ◽  
Vol 82 (21) ◽  
pp. 3788-3790 ◽  
Author(s):  
Fanshun Meng ◽  
Kongchang Chen ◽  
He Tian ◽  
Libero Zuppiroli ◽  
Frank Nuesch
Keyword(s):  
Cyanine Dye ◽  
Photovoltaic Devices ◽  
Donor And Acceptor

scholarly journals Spectral fine tuning of cyanine dyes: electron donor–acceptor substituted analogues of thiazole orange

2015 ◽  
Vol 14 (9) ◽  
pp. 1703-1712 ◽  
Author(s):  
Elizabeth E. Rastede ◽  
Matteus Tanha ◽  
David Yaron ◽  
Simon C. Watkins ◽  
Alan S. Waggoner ◽  
...  
Keyword(s):  
Electron Donor ◽  
Emission Spectra ◽  
Fine Tuning ◽  
Cyanine Dye ◽  
Thiazole Orange ◽  
Absorption And Emission ◽  
Donor And Acceptor ◽  
Dye Absorption ◽  
Donor Acceptor ◽  
Electron Donor And Acceptor

Strategically placed electron donor and acceptor groups allow fine-tuning of cyanine dye absorption and emission spectra while preserving recognition of biomolecular hosts such as DNA and proteins.

Influence of the cyanine counter anions on a bi-layer solar cell performance

2013 ◽  
Vol 1493 ◽  
pp. 275-280
Author(s):  
Olga Malinkiewicz ◽  
Thais Grancha ◽  
Martijn Lenes ◽  
Hicham Brine ◽  
Alejandra Soriano ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Energy Levels ◽  
Open Circuit ◽  
Cyanine Dye ◽  
Optimal Alignment ◽  
Solar Cell Performance ◽  
Counter Ions ◽  
Donor And Acceptor ◽  
Open Circuit Voltages

ABSTRACTWe present normal and inverted solution processed bi-layer solar cells using cationic cyanine dyes as the electron donor and a fullerene as the electron acceptor. The cells exhibit high open circuit voltages up to 1 volt showing the optimal alignment of donor and acceptor energy levels. We demonstrate the large effect that cyanine dye counter ions can have on the energetics of the solar cells and how the S-shaped current density vs. voltage (J-V) curves can be avoided.

Charge transfer modeling in monolayer circular graphene quantum dots–ZnO nanowires system for application in photovoltaic devices

2017 ◽  
Vol 31 (02) ◽  
pp. 1650253 ◽  
Author(s):  
Shahryar Tamandani ◽  
Ghafar Darvish
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Transfer Rate ◽  
Graphene Quantum Dots ◽  
Analytical Calculation ◽  
Zno Nanowires ◽  
Photovoltaic Devices ◽  
Electron Transfer Rate ◽  
Cdse Qds ◽  
Donor And Acceptor

We investigate electron transport between circular graphene quantum dots (CGQDs) and ZnO nanowires (ZnO NWs). This structure can be used as donor and acceptor in hybrid solar cells. We consider circular quantum dots (QDs) and use analytical calculation in order to estimate wavefunctions of GQD and ZnO NWs. After calculating the wavefunctions overlap, we use Marcus relation in order to calculate electron transfer rate. Also, we calculate this transfer rate for CdSe QDs–ZnO NWs system. Results from analytical calculation show that the transfer rate is limited to 10[Formula: see text] s[Formula: see text]. This result is in agreement with experimental results which are reported earlier. Such systems could be suitable for solar cells.

Electron Donor and Acceptor Spatial Distribution in Structured Bulk Heterojunction Photovoltaic Devices Induced by Periodic Photopolymerization

Langmuir ◽  
2012 ◽  
Vol 28 (28) ◽  
pp. 10305-10309 ◽  
Author(s):  
Satoshi Watanabe ◽  
Yasumasa Fukuchi ◽  
Masako Fukasawa ◽  
Takafumi Sassa ◽  
Masanobu Uchiyama ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Electron Donor ◽  
Bulk Heterojunction ◽  
Photovoltaic Devices ◽  
Donor And Acceptor ◽  
Electron Donor And Acceptor

Exploring the Effect of Electron Withdrawing Groups on Optoelectronic Properties of Pyrazole Derivatives as Efficient Donor and Acceptor Materials for Photovoltaic Devices

2019 ◽  
Vol 233 (11) ◽  
pp. 1625-1644 ◽  
Author(s):  
Ahmad Irfan ◽  
Mehboobali Pannipara ◽  
Abdullah G. Al-Sehemi ◽  
Muhammad Waseem Mumtaz ◽  
Mohammed A. Assiri ◽  
...  
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Density Functional ◽  
Dye Sensitized Solar Cells ◽  
Acid Methyl Ester ◽  
Good Choice ◽  
Band Alignment ◽  
Photovoltaic Devices ◽  
Photovoltaic Properties ◽  
Donor And Acceptor

Abstract Multifunctional pyrazole derivative, i.e. 3-amino-1-(5-hydroxy-3-methyl-1H-pyrazol-4-yl)-1H-benzo[f]chromene-2-carbonitrile (PBCC) has been synthesized and characterized. To shed light on various properties of interests, the ground state geometry was optimized by adopting Density Functional Theory (PBE/TZ2P). The effect of different functionals on the absorption wavelengths was studied by using Time-Domain DFT (TDDFT), e.g. GGA functional PBE, hybrid functionals B3LYP and PBE0, rang separated functionals CAM-B3LYP, LCY-PBE and CAMY-B3LYP, Dispersion Corrections PBE-D3 and B3LYP-D3. Among all these functionals PBE and PBE-D3 were found to be good choices which reproduced the absorption spectra of the PBCC. With the aim to enhance the electro-optical, charge transfer and photovoltaic properties, five new derivatives were designed by di-substituting the –F, –Cl, –Br, –COOH and –CN at benzochromene moiety. The electron injection barrier, band gap alignment and related calculated photovoltaic parameters revealed that PBCC and its newly designed derivatives would be proficient to be used in photovoltaic devices. These compounds can be used as donor materials in dye-sensitized solar cells (DSSCs) with favorable type-II band alignment. Moreover, PBCC and most of its derivatives might also be good choice as efficient acceptors with poly(dithieno[3,2-b:2,3-d]pyrrole thiophene) (PDTPr-T) and donor materials with Phenyl-C61-butyric acid methyl ester (PC61BM) in organic solar cells.

Surface enhancement of Raman and absorption spectra from cyanine dye D266 adsorbed on ZnO colloids

1996 ◽  
Vol 88 (1) ◽  
pp. 281-290 ◽  
Author(s):  
HAO WEN ◽  
TIANJING HE ◽  
CUNYI XU ◽  
JIAN ZUO ◽  
FAN-CHEN LIU
Keyword(s):  
Absorption Spectra ◽  
Cyanine Dye ◽  
Surface Enhancement ◽  
Zno Colloids

HIGH EFFICIENCY, LARGE-AREA PHOTOVOLTAIC DEVICES USING AMORPHOUS Si : F : H ALLOY

1981 ◽  
Vol 42 (C4) ◽  
pp. C4-463-C4-466
Author(s):  
A. Madan ◽  
W. Czubatyj ◽  
J. Yang ◽  
J. McGill ◽  
S. R. Ovshinsky
Keyword(s):  
High Efficiency ◽  
Photovoltaic Devices ◽  
Large Area ◽  
Amorphous Si
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