Organic Photovoltaics: Technologies and Manufacturing

Organic photovoltaics (OPVs) have been pursued as a next generation power source due to their light weight, thin, fl exible, and simple fabrication advantages. Improvements in OPV effi ciency have attracted great attention in the past decade. Because the functional layers in OPVs can be dissolved in common solvents, they can be manufactured by eco-friendly and scalable printing or coating technologies. In this review article, the focus is on recent efforts to control nanomorphologies of photoactive layer and discussion of various solution-processed charge transport and extraction materials, to maximize the performance of OPV cells. Next, recent works on printing and coating technologies for OPVs to realize solution processing are reviewed. The review concludes with a discussion of recent advances in the development of non-traditional lamination and transfer method towards highly effi cient and fully solution-processed OPV.

Applied Physics Letters, 2008

Organic Electronics, 2013

and sharing with colleagues.

Solar Energy Materials and Solar Cells, 2014

With the ever-increasing focus on obtaining higher device power conversion efficiencies (PCEs) for organic photovoltaics (OPV), there is a need to ensure samples are measured accurately.

Solar Energy Materials and Solar Cells, 2013

Large-area, flexible organic photovoltaic (OPV) modules are fabricated successfully by gravure printing in air, using an industrial-scale printing proofer of similar performance to commercial roll-to-roll printing processes. Both the hole transport layer, poly-3,4-ethylenedioxy-thiophene:poly(styrene sulfonic-acid) (PEDOT:PSS), and the active layer, poly(3-hexylthiophene):[6,6]-phenyl C61 butyric acid methyl ester (P3HT:PCBM), are successively printed on indium tin oxide (ITO) coated polyethylene terephthalate (ITO/PET) substrates with evaporated aluminum (Al) top electrodes. The 45 cm 2 modules, composed of 5 cells connected in series, show power conversion efficiency (PCE) of over 1.0%, in which the short-circuit current (J sc ) and open-circuit voltage (V oc ) are as high as 7.14 mA/cm 2 and 2.74 V (0.55 V per cell), respectively. The PCEs could be potentially improved by the further optimization of the layer interface, layer morphology and flexible substrate properties. The results suggest that gravure printing may be a suitable technique for fast commercial processing of large-area, flexible OPVs with high output.

This paper review based on the organic solar cell (OSC). In this review we investigates on the performance perspectives and theoretical of the solar cell using both simulation and spin coating fabrication technique. This paper reviews on progress several organic materials which use as active layer and issues on device efficiencies. This paper also review on development in device structure to get desired higher output in OSC.

The presence of a brittle and expensive ITO electrode is a limiting factor towards low cost OPV modules. Moreover, ITO layers on PET or PEN substrates are typically characterized by relatively high sheet resistances and the presence of large amounts of spikes that lead to efficiency losses. We have developed an alternative for the ITO anode, based on highly conductive PEDOT:PSS in combination with current collecting grids. Moreover, initial experiments indicate that the stability of ITO-free devices is higher than the stability of standard devices based on ITO. This work will ultimately contribute toward fully printed devices, which will provide low-cost manufacturing and improved stability of organic photovoltaics.

Organic Electronics, 2012

and sharing with colleagues.

Solar Energy Materials and Solar Cells, 2014

The transfer from lab scale to industrial application is one of the challenges for organic photovoltaics. For this, non halogenated formulations are a decisive need for the upscaling process, as are roll-to-toll (R2R) compatible methods. Devices processed with o-xylene using slot-die coating as a sheet-to-sheet technique show a reduced efficiency on a larger scale compared to lab scale solar cells. By using a mixture of high and low volatile solvents which selectively dissolve one component, the film homogeneity and the efficiency is dramatically improved. The slot-die coated active layers for solar cells processed from non-halogenated solvents show device efficiencies above 3% on flexible substrates.

Applied Physics Letters, 2015

A Spray deposition process equipped with an in-situ optical thickness monitoring system has been developed to fabricate the photo active layer of solar cells. Film thickness is monitored by a photodiode-LED couple after each deposition cycle. It is found thickness of spray deposited photo active film linearly increase with deposition cycle over a wide range of deposition conditions. After instrument calibration, optimization of the active layer thickness can be accomplished by simply setting the desired absorbance of the film. The simple process is used for rapid optimization of devices based on poly(3-hexylthiophene-2,5-diyl) (P3HT) and Phenyl-C61-butyric acid methyl ester as well as P3HT and indene-C60 bis-adduct combination to achieve up to 4.21 % power conversion efficiency.

Energy Technology, 2015

Large area Organic Light Emitting Diodes (OLEDs) and Organic Photovoltaics (OPV) are in the focus of research activities throughout the world. Organic semiconductors are so attractive because of their flexibility, low cost and high throughput of processing. Both OLEDs and OPV are evaluated as one of the promising technologies due to the huge market potential and option of reel to reel manufacturing on low cost flexible substrates by means of standard coating and printing technologies.

International Journal of Applied Power Engineering (IJAPE), 2025

The accelerating development of renewable energy technologies is imperative for addressing the problems of climate change and resource depletion. Solar energy, ideal for distributed power generation and more environmentally friendly, is integral to the progression of solar technology. Organic solar cells (OSCs) have become a key innovation in this domain, offering a promising alternative to traditional solar technologies. OSCs have received a lot of interest in the preceding years owing to their capacity to increase efficiency, affordability, and longevity. However, a dearth of research and development activities aimed at improving organic photovoltaic systems exists. This work details the laborious process of building a Bulk heterojunction (BHJ) OSC, describing the manufacturing stages and subsequent device characterization. OSCs were created in this work using three active layer materials: P3HT:PCBM, PTB7:PCBM, and PCDTBT:PCBM. The comparative analysis revealed significant efficiency disparities, with PCDTBT:PCBM exhibiting superior performance and electrical properties, while challenges were encountered with aged materials, emphasizing the relevance of meticulous material handling and the use of cutting-edge fabrication machinery in achieving efficient solar cell production.

Organic solar cells was refer to photo voltaic cells and it was a kind of green energy source of great potential application due to low production costs, mechanical flexibility devices. The aim of our work was to focus on the evolution of the polymeric solar with comparing studies for the period 2007-2015.