Defects in Copper Indium Aluminum Diselenide Films and their Impact on Photovoltaic Device Performance

2003 ◽  
Vol 763 ◽  
Author(s):  
Jennifer T. Heath ◽  
J. David Cohen ◽  
William N. Shafarman
Keyword(s):  
Electronic Properties ◽  
Photovoltaic Device ◽  
Absorber Layer ◽  
Device Performance ◽  
Photovoltaic Devices ◽  
Al Content ◽  
Copper Indium

AbstractThe electronic properties of polycrystalline CuIn1-xAlxSe2 (CIAS) films, which are incorporated as the absorber layer in photovoltaic devices, have been studied to better understand limitations on device performance. These studies have shown that compared to lower Al content films and to CuIn1-yGaySe2films, films with x ≥ 0.29 are relatively intrinsic, spatially nonuniform, and have broader bandtails characterized by much higher Urbach energies. This indicates that the CIAS films with x ≥ 0.29 are significantly more disordered than lower Al content CIAS or corresponding CIGS films, which likely negatively impacts the resulting photovoltaic device performance.

DEPENDENCE OF ORGANIC/INORGANIC PHOTOVOLTAIC DEVICE PERFORMANCE ON PRECURSOR'S CONCENTRATION USED FOR ELECTROSPUN TiO2 NANOFIBERS

NANO ◽  
2013 ◽  
Vol 08 (03) ◽  
pp. 1350033 ◽  
Author(s):  
MUHAMMAD TANVEER ◽  
AMIR HABIB ◽  
MUHAMMAD BILAL KHAN
Keyword(s):  
Absorption Spectroscopy ◽  
Conversion Efficiency ◽  
Composite Nanofibers ◽  
Photovoltaic Device ◽  
Device Performance ◽  
Photovoltaic Devices ◽  
Tio2 Nanofibers ◽  
Incident Photon

Electrospun TiO2 nanofibers were synthesized by optimizing various electrospinning conditions. The effect of the precursor's concentration present in sol used for electrospinning was studied for the performance of hybrid photovoltaic devices. The synthesized nanofibers were characterized by XRD and UV-Vis absorption spectroscopy and morphology of the fibers were investigated by FE-SEM. The surface of fibers was modified, and these modified fibers were applied to P3HT/ TiO2 / N719 composite nanofibers photovoltaic devices. The device performance was investigated by analysis of the incident photon to current conversion efficiency and a J– V characteristic under 1. 5G illuminations, which show that efficiency of the devices, can be improved from 0.13% to 0.83% by introducing TiO2 nanofibers synthesized by optimum precursor's concentration.

scholarly journals Lateral PbS Photovoltaic Devices for High Performance Infrared and Terahertz Photodetectors

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1692
Author(s):  
Emmanuel K. Ampadu ◽  
Jungdong Kim ◽  
Eunsoon Oh
Keyword(s):  
High Performance ◽  
Room Temperature ◽  
Photovoltaic Device ◽  
Photovoltaic Devices ◽  
Temperature Spectrum ◽  
Terahertz Region ◽  
Room Temperature Spectrum ◽  
Ftir Spectrometer ◽  
Titanium Substrates ◽  
Deposition Conditions

We fabricated a lateral photovoltaic device for use as infrared to terahertz (THz) detectors by chemically depositing PbS films on titanium substrates. We discussed the material properties of PbS films grown on glass with varying deposition conditions. PbS was deposited on Ti substrates and by taking advantage of the Ti/PbS Schottky junction, we discussed the photocurrent transients as well as the room temperature spectrum response measured by Fourier transform infrared (FTIR) spectrometer. Our photovoltaic PbS device operates at room temperature for wavelength ranges up to 50 µm, which is in the terahertz region, making the device highly applicable in many fields.

Energetics and Optimal Molecular Packing for Singlet Fission in BN-doped Perylenes: Electronic Adiabatic State Basis Screening

2021 ◽  
Author(s):  
Anurag Singh ◽  
Alexander Humeniuk ◽  
Merle Insa Silja Röhr
Keyword(s):  
Electronic Properties ◽  
Molecular Packing ◽  
Photovoltaic Devices ◽  
Singlet Fission ◽  
Adiabatic State

Singlet fission has the potential to increase the efficiency of photovoltaic devices, but the design of suitable chromophores is notoriously difficult. Both the electronic properties of the monomer and the...

scholarly journals Tailoring the CdS/CdSe/CdTe multilayer structure for optimization of photovoltaic device performance guided by mapping spectroscopic ellipsometry

2021 ◽  
Vol 221 ◽  
pp. 110907
Author(s):  
Mohammed A. Razooqi Alaani ◽  
Prakash Koirala ◽  
Puja Pradhan ◽  
Adam B. Phillips ◽  
Nikolas J. Podraza ◽  
...  
Keyword(s):  
Spectroscopic Ellipsometry ◽  
Multilayer Structure ◽  
Photovoltaic Device ◽  
Device Performance

A universal approach for optimizing charge extraction in electron transporting layer-free organic solar cells via Lewis base doping

2019 ◽  
Vol 7 (45) ◽  
pp. 25808-25817
Author(s):  
Rong Wang ◽  
Boxin Wang ◽  
Jianqiu Wang ◽  
Xuning Zhang ◽  
Dongyang Zhang ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Photovoltaic Device ◽  
Lewis Base ◽  
Device Performance ◽  
Universal Approach ◽  
Electron Transporting Layer ◽  
Charge Extraction ◽  
Base Doping

Applying anion-induced electron transfer doping with a series of TXABr salts to non-fullerene organic solar cells enables to tune the doping efficiency and photovoltaic device performance.

Schottky Solar Cells with CuInS2 Nanocrystals as Absorber Material

2015 ◽  
Vol 229 (1-2) ◽  
Author(s):  
Holger Borchert ◽  
Dorothea Scheunemann ◽  
Katja Frevert ◽  
Florian Witt ◽  
Andreas Klein ◽  
...  
Keyword(s):  
Solar Cells ◽  
Semiconductor Nanocrystals ◽  
Absorber Layer ◽  
Limiting Factor ◽  
Device Performance ◽  
Layer By Layer ◽  
Copper Indium Disulfide ◽  
Layer Deposition ◽  
Absorber Material ◽  
Cadmium And Lead

AbstractColloidal semiconductor nanocrystals with tunable optical properties are promising materials for light harvesting in solar cells. So far, in particular cadmium and lead chalcogenide nanocrystals were intensively studied in this respect, and the device performance has made rapid progress in recent years. In contrast, less research efforts were undertaken to develop solar cells based on Cd- and Pb-free nanoparticles as absorber material. In the present work, we report on Schottky solar cells with the absorber layer made of colloidal copper indium disulfide nanocrystals. Absorber films with up to ∼ 500 nm thickness were realized by a solution-based layer-by-layer deposition technique. The device performance was systematically studied dependent on the absorber layer thickness. Decreasing photocurrent densities with increasing thickness revealed charge transport to be a limiting factor for the device performance.

Star-shaped heptamers of discotic dyes as new materials for photovoltaic devices

2004 ◽  
Vol 836 ◽  
Author(s):  
S. Holger Eichhorn ◽  
Nicholas Fox ◽  
Bryan Bornais
Keyword(s):  
Liquid Crystal ◽  
Electronic Properties ◽  
Photovoltaic Devices ◽  
New Materials ◽  
Discotic Liquid Crystal ◽  
P Type ◽  
Potential Use

AbstractPotentially n-type and p-type semi-conducting discotic liquid crystal dyes are linked together to star-shaped heptamers, which might self-organize into super-columns of separated p-type and n-type columnar stacks. Their synthesis, mesomorphism, and electronic properties will be discussed along with their potential use in photovoltaic devices.

Copper Indium Gallium Selenide (CIGS) Photovoltaic Devices Made Using Multistep Selenization of Nanocrystal Films

2013 ◽  
Vol 5 (18) ◽  
pp. 9134-9140 ◽  
Author(s):  
Taylor B. Harvey ◽  
Isao Mori ◽  
C. Jackson Stolle ◽  
Timothy D. Bogart ◽  
David P. Ostrowski ◽  
...  
Keyword(s):  
Gallium Selenide ◽  
Photovoltaic Devices ◽  
Copper Indium Gallium Selenide ◽  
Copper Indium ◽  
Nanocrystal Films ◽  
Indium Gallium ◽  
Copper Indium Gallium

Electronic properties of the Cu2ZnSn(Se,S)4 absorber layer in solar cells as revealed by admittance spectroscopy and related methods

2012 ◽  
Vol 100 (25) ◽  
pp. 253905 ◽  
Author(s):  
Oki Gunawan ◽  
Tayfun Gokmen ◽  
Charles W. Warren ◽  
J. David Cohen ◽  
Teodor K. Todorov ◽  
...  
Keyword(s):  
Solar Cells ◽  
Electronic Properties ◽  
Absorber Layer ◽  
Admittance Spectroscopy
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