scholarly journals Atomistic Time-Domain Simulations of Light-Harvesting and Charge-Transfer Dynamics in Novel Nanoscale Materials for Solar Energy Applications

2015 ◽  
Author(s):  
Oleg Prezhdo
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Time Domain ◽  
Light Harvesting ◽  
Nanoscale Materials ◽  
Energy Applications ◽  
Charge Transfer Dynamics

scholarly journals Charge-transfer dynamics at the dye–semiconductor interface of photocathodes for solar energy applications

2017 ◽  
Vol 198 ◽  
pp. 449-461 ◽  
Author(s):  
Fiona A. Black ◽  
Christopher J. Wood ◽  
Simbarashe Ngwerume ◽  
Gareth H. Summers ◽  
Ian P. Clark ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Photophysical Properties ◽  
Redox Couple ◽  
Semiconductor Interface ◽  
Energy Applications ◽  
Dye Regeneration ◽  
Transient Spectroscopy ◽  
Charge Transfer Dynamics ◽  
P Type

This article describes a comparison between the photophysical properties of two charge-transfer dyes adsorbed onto NiO via two different binding moieties. Transient spectroscopy measurements suggest that the structure of the anchoring group affects both the rate of charge recombination between the dye and NiO surface and the rate of dye regeneration by an iodide/triiodide redox couple. This is consistent with the performance of the dyes in p-type dye sensitised solar cells. A key finding was that the recombination rate differed in the presence of the redox couple. These results have important implications on the study of electron transfer at dye|semiconductor interfaces for solar energy applications.

Novel porphyrin-preparation, characterization, and applications in solar energy conversion

2016 ◽  
Vol 18 (9) ◽  
pp. 6885-6892 ◽  
Author(s):  
Jianfeng Lu ◽  
Hao Li ◽  
Shuangshuang Liu ◽  
Yu-Cheng Chang ◽  
Hui-Ping Wu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Solar Energy Conversion

Accelerated inner charge transfer in porphyrins promotes a broad light-harvesting ability up to 840 nm and a conversion efficiency of 9.2%.

Cost Effective Synthesis and Fabrication of Phase-Pure Kesterite Cu2-xZn1.3SnS4 P-type Absorber Layer Thin Films by Solvent Based Process Technique for Photovoltaic Solar Energy Applications

2018 ◽  
Vol 7 (4) ◽  
pp. 36
Author(s):  
B. Khadambari ◽  
S. S. Bhattacharya
Keyword(s):  
Solar Energy ◽  
Renewable Energy Sources ◽  
Cost Effective ◽  
Absorber Layer ◽  
Window Layer ◽  
Energy Applications ◽  
Process Technique ◽  
Absorber Material ◽  
Effective Synthesis ◽  
P Type

Solar has become one of the fastest growing renewable energy sources. With the push towards sustainability it is an excellent solution to resolve the issue of our diminishing finite resources. Alternative photovoltaic systems are of much importance to utilize solar energy efficiently. The Cu-chalcopyrite compounds CuInS2 and CuInSe2 and their alloys provide absorber material of high absorption coefficients of the order of 105 cm-1. Cu2ZnSnS4 (CZTS) is more promising material for photovoltaic applications as Zn and Sn are abundant materials of earth’s crust. Further, the preparation of CZTS-ink facilitates the production of flexible solar cells. The device can be designed with Al doped ZnO as the front contact, n-type window layer (e.g. intrinsic ZnO); an n-type thin film buffer layer (e.g. CdS) and a p-type CZTS absorber layer with Molybdenum (Mo) substrate as back contact. In this study, CZTS films were synthesized by a non-vaccum solvent based process technique from a molecular-ink using a non toxic eco-friendly solvent dimethyl sulfoxide (DMSO). The deposited CZTS films were optimized and characterized by XRD, UV-visible spectroscopy and SEM.

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