HOME / Controlled growth of a molecular bulk heterojunction photovoltaic cell

Controlled growth of a molecular bulk heterojunction photovoltaic cell

Morphology control in co-evaporated bulk heterojunction solar cells

Bulk heterojunction solar cells made by vacuum co-evaporation of polythiophene (PTh) and fullerene (C 60) are reported and the blend morphology control through donor–acceptor composition and post-situ annealing demonstrated -deposited heterojunctions are shown to generate about 60% higher photocurrents than their thickness-optimized PTh/C 60 planar

Phase controlled all-polymer bulk-heterojunction photovoltaic cells

All-polymer bulk-heterojunction photovoltaic cells based on poly(N-vinyl carbazole) and poly(9,9-dioctylfluorene-co-benzothiadiazole) co-casting films are investigated. One of the highest reported open-circuit voltage among the all-polymer solar cells is obtained due to the large energy offset between the highest occupied molecular orbital of

Fundamentals of bulk heterojunction organic solar cells: An

An ideal photovoltaic device should possess a consistent performance during its operational lifetime; however, organic semiconductors are often regarded as inherently unstable when they are subjected to the cyclic environmental changes [10].Undoubtedly, significant degradation pathways have been posited to occur at virtually every layer and interface of OSC

Controlled growth of a molecular bulk heterojunction photovoltaic

Shtein, M., Gossenberger, H. F., Benziger, J. B. & Forrest, S. R. Material transport regimes and mechanisms for growth of molecular organic thin films using low-pressure organic vapor phase

Controlled growth of a molecular bulk heterojunction photovoltaic

Here, we present a method for growing crystalline organic films into a controlled bulk heterojunction; that is, the positions and orientations of donor and acceptor materials are

Tailoring the growth and electronic structures of organic molecular

[6] Yang F, Shtein M and Forrest S R 2004 Controlled growth of a molecular bulk heterojunction photovoltaic cell Nat. Mater. 4 37–41. Crossref Google Scholar [7] Witte G 2004 Growth of aromatic molecules on solid substrates for applications in organic electronics J. Mater. Res. 19 1889–916. Crossref Google Scholar

Complex multilength-scale morphology in organic photovoltaics

Control over the morphology in bulk heterojunction (BHJ) organic photovoltaics (OPVs) remains a key issue in improving the power conversion efficiency (PCE), despite the performance advances in recent years. This review summarizes the morphological features and guiding strategies of OPV blends spanning fullerene blends, non-fullerene blends, and all

NREL/SR-520-42381 Efficiency Using Tandem Organic

2. "Controlled growth of a molecular bulk heterojunction photovoltaic cell," F. Yang, M. Shtein, and S. R. Forrest, Nat. Mater. 4, 39 (2005). This represents the first controlled structure for a bulk

Li, G., Shrotriya, V., Huang, J. S., Yao, Y., Moriarty, T., Emery, K

Converting solar energy into electricity provides a much-needed solution to the energy crisis the world is facing today. Polymer solar cells have shown potential to harness solar energy in a cost

Morphology Characterization of Bulk Heterojunction Solar Cells

Revealing the nanostructure of bulk-heterojunction (BHJ) photovoltaic blends is a critical task in the field of organic photovoltaics. The complicated morphology, ranging from binary blends to ternary mixtures, shows quite varied structural details that need to be fully characterized in terms of correlating them with device performance.

Synthesis of model heterojunction interfaces reveals molecular

Control of the molecular configuration at the interface of an organic heterojunction is key to the development of efficient optoelectronic devices. Due to the difficulty in characterizing these

Controlled growth of a molecular bulk heterojunction

heterojunction that serves to dissociate strongly bound photogenerated excitons1. Further effi ciency increases have been achieved in both polymer2,3 and small-molecular-mass4 organic photovoltaic cells through the use of the bulk heterojunction (BHJ), where the distance an exciton must diff use from its generation to its

Tailor-Made Additives for Morphology Control in

We apply this strategy as a means to predictably control morphology in molecular bulk-heterojunction (BHJ) photovoltaic cells. Through the use of an asymmetric oligomer substituted with a bulky triisobutylsilyl end group, the morphology of

Tailor-Made Additives for Morphology Control in Molecular Bulk

We apply this strategy as a means to predictably control morphology in molecular bulk-heterojunction (BHJ) photovoltaic cells. Through the use of an asymmetric oligomer substituted with a bulky triisobutylsilyl end group, the morphology of BHJ blends can be controlled resulting in a near doubling (from 1.3 to 2.2%) in power conversion efficiency.

Morphology Control in co-evaporated bulk heterojunction solar cells

Bulk heterojunction solar cells made by vacuum co-evaporation of polythiophene (PTh) and fullerene (C60) are reported and the blend morphology control through donor–acceptor composition and post

Fast-Growth Polymer: Fullerene Bulk-Heterojunction

The bulk-heterojunction (BHJ) system that uses a π-conjugated polymer as an electron donor, and a fullerene derivative as an electron acceptor, is widely used in organic solar cells (OSCs) to facilitate efficient charge

Efficient bulk heterojunction photovoltaic cells using small-molecular

The power conversion efficiency of small-molecular-weight and polymer organic photovoltaic cells has increased steadily over the past decade. This progress is chiefly attributable to the

NREL/SR-520-42381 Efficiency Using Tandem Organic

2. "Controlled growth of a molecular bulk heterojunction photovoltaic cell," F. Yang, M. Shtein, and S. R. Forrest, Nat. Mater. 4, 39 (2005). This represents the first controlled structure for a bulk heterojunction solar cell. The principle was to use organic vapor - phase deposition of CuPc on the ITO anode, adjusting the growth conditions to

[PDF] High-efficiency solution processable polymer photovoltaic cells

Converting solar energy into electricity provides a much-needed solution to the energy crisis the world is facing today. Polymer solar cells have shown potential to harness solar energy in a cost-effective way. Significant efforts are underway to improve their efficiency to the level of practical applications. Here, we report highly efficient polymer solar cells based on a bulk heterojunction

Annealing-induced phase separation in small-molecular bulk

This method results in a power conversion efficiency 50 per cent higher than the best values reported for comparable bilayer devices, suggesting that this strained annealing process could allow for the formation of low-cost and high-efficiency thin film organic solar cells based on vacuum-deposited small-molecular-weight organic materials.

Controlled growth of a molecular bulk heterojunction photovoltaic cell

The power conversion efficiency of organic photovoltaic cells has increased with the introduction of the donor-acceptor heterojunction that serves to dissociate strongly bound photogenerated excitons 1.Further efficiency increases have been achieved in both polymer 2,3 and small-molecular-mass 4 organic photovoltaic cells through the use of the bulk heterojunction (BHJ),

The influence of molecular orientation on organic bulk heterojunction

In bulk heterojunction organic photovoltaics, electron-donating and electron-accepting materials form a distributed network of heterointerfaces in the photoactive layer, where critical photo

Growth and modelling of spherical crystalline morphologies of molecular

Using this method, Yang et al. 1 showed controlled growth of ordered bulk heterojunction photovoltaic cells, where the electron donor layer of copper phthalocyanine exhibited a continuous wetting

Nonfullerene Acceptor Molecules for Bulk Heterojunction Organic Solar Cells

The bulk-heterojunction blend of an electron donor and an electron acceptor material is the key component in a solution-processed organic photovoltaic device. In the past decades, a p-type conjugated polymer and an n-type fullerene derivative have been the most commonly used electron donor and electron acceptor, respectively. While most advances of

Bulk-heterojunction organic photovoltaic cells fabricated using a

Bulk-heterojunction organic photovoltaic cells fabricated using a high-viscosity solution of poly(3-hexylthiophene) with extremely high molecular weight Download PDF Rapid Communication

Highly efficient CsPbI3/Cs1-xDMAxPbI3 bulk

A stable CsPbI3/Cs1-xDMAxPbI3 bulk heterojunction (BHJ) PSC was fabricated via precisely controlling the thermal annealing process. The perovskite BHJ structure not only facilitates the charge separation and

Formation of crystalline bulk heterojunctions in organic solar

Solution-processed organic bulk-heterojunction (BHJ) active layers form sophisticated nanostructures during the drying of the wet-deposited solution, because of complex physical processes such as crystallization and/or liquid-liquid phase separation (LLPS). This structure strongly impacts the photovoltaic performance of organic solar cells.

Bulk Heterojunction Solar Cells: Morphology and

Jing Yang, Peiqing Cong, Lie Chen, Xiaochen Wang, Jianfeng Li, Ailing Tang, Bao Zhang, Yanfang Geng, Erjun Zhou. Introducing Fluorine and Sulfur Atoms into Quinoxaline-Based p-type Polymers To Gradually Improve

Controlled growth of a molecular bulk heterojunction photovoltaic cell
Controlled growth of a molecular bulk heterojunction photovoltaic cell [PDF]

Related Contents

Power Your Home With Clean Solar Energy?

We are a premier solar development, engineering, procurement and construction firm.