Real-Time Investigation of Crystallization and Phase-Segregation Dynamics in P3HT:PCBM Solar Cells During Thermal Annealing

2011 ◽  
Vol 21 (9) ◽  
pp. 1701-1708 ◽  
Author(s):  
Tiziano Agostinelli ◽  
Samuele Lilliu ◽  
John G. Labram ◽  
Mariano Campoy-Quiles ◽  
Mark Hampton ◽  
...  
Keyword(s):  
Solar Cells ◽  
Real Time ◽  
Thermal Annealing ◽  
Phase Segregation

scholarly journals Influence of the Active Layer Structure on the Photovoltaic Performance of Water-Soluble Polythiophene-Based Solar Cells

Polymers ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1640
Author(s):  
Massimiliano Lanzi ◽  
Debora Quadretti ◽  
Martina Marinelli ◽  
Yasamin Ziai ◽  
Elisabetta Salatelli ◽  
...  
Keyword(s):  
Solar Cells ◽  
Layer Structure ◽  
Photovoltaic Performance ◽  
Phase Segregation ◽  
Water Soluble ◽  
Polymerization Reaction ◽  
Fullerene Derivative ◽  
C60 Fullerene ◽  
Photovoltaic Efficiency ◽  
Single Material

A new side-chain C60-fullerene functionalized thiophene copolymer bearing tributylphosphine-substituted hexylic lateral groups was successfully synthesized by means of a fast and effective post-polymerization reaction on a regioregular ω-alkylbrominated polymeric precursor. The growth of the polymeric intermediate was followed by NMR spectrometry in order to determine the most convenient reaction time. The obtained copolymer was soluble in water and polar solvents and was used as a photoactive layer in single-material organic photovoltaic (OPV) solar cells. The copolymer photovoltaic efficiency was compared with that of an OPV cell containing a water-soluble polythiophenic homopolymer, functionalized with the same tributylphosphine-substituted hexylic side chains, in a blend with a water-soluble C60-fullerene derivative. The use of a water-soluble double-cable copolymer made it possible to enhance the control on the nanomorphology of the active blend, thus reducing phase-segregation phenomena, as well as the macroscale separation between the electron acceptor and donor components. Indeed, the power conversion efficiency of OPV cells based on a single material was higher than that obtained with the classical architecture, involving the presence of two distinct ED and EA materials (PCE: 3.11% vs. 2.29%, respectively). Moreover, the synthetic procedure adopted to obtain single material-based cells is more straightforward and easier than that used for the preparation of the homopolymer-based BHJ solar cell, thus making it possible to completely avoid the long synthetic pathway which is required to prepare water-soluble fullerene derivatives.

scholarly journals Abnormal spatial heterogeneity governing charge-carrier mechanism in efficient Ruddlesden-Popper perovskite solar cells

2021 ◽  
Author(s):  
Jun Xi ◽  
Junseop Byeon ◽  
Unsoo Kim ◽  
Kijoon Bang ◽  
Gi Rim Han ◽  
...  
Keyword(s):  
Solar Cells ◽  
Charge Carrier ◽  
Spatial Heterogeneity ◽  
Real Time ◽  
Photovoltaic Performance ◽  
Perovskite Solar Cells ◽  
Carrier Mechanism

Layered Ruddlesden–Popper perovskite (RPP) photovoltaics have gained substantial attention owing to their excellent air stability. However, their photovoltaic performance is still limited by the unclear real-time charge-carrier mechanism of operating...

Two‐step Thermal Annealing: An Effective Route for 15% Efficient Quasi‐2D Perovskite Solar Cells

ChemPlusChem ◽  
2021 ◽  
Author(s):  
Valentino Romano ◽  
Leyla Najafi ◽  
Albertus Sutanto ◽  
Giorgio Schileo ◽  
Valentin Queloz ◽  
...  
Keyword(s):  
Solar Cells ◽  
Thermal Annealing ◽  
Perovskite Solar Cells

Real-Time Shape Evolution of Nanoimprinted Polymer Structures during Thermal Annealing

Nano Letters ◽  
2006 ◽  
Vol 6 (8) ◽  
pp. 1723-1728 ◽  
Author(s):  
Ronald L. Jones ◽  
Tengjiao Hu ◽  
Christopher L. Soles ◽  
Eric K. Lin ◽  
Ronald M. Reano ◽  
...  
Keyword(s):  
Real Time ◽  
Thermal Annealing ◽  
Shape Evolution ◽  
Time Shape

Optimisation of diketopyrrolopyrrole:fullerene solar cell performance through control of polymer molecular weight and thermal annealing

2014 ◽  
Vol 2 (45) ◽  
pp. 19282-19289 ◽  
Author(s):  
Zhenggang Huang ◽  
Elisa Collado Fregoso ◽  
Stoichko Dimitrov ◽  
Pabitra Shakya Tuladhar ◽  
Ying Woan Soon ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Solar Cells ◽  
Solar Cell ◽  
Thermal Annealing ◽  
Bulk Heterojunction ◽  
Cell Performance ◽  
Polymer Molecular Weight ◽  
Solar Cell Performance ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

The performance of bulk heterojunction solar cells based on a novel donor polymer DPP-TT-T was optimised by tuning molecular weight and thermal annealing.

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