Tanya Kumari

Tanya Kumari
University of Southern Denmark | SDU · Mads Clausen Institute

Postdoctoral Research Associate

About

29
Publications
6,879
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
782
Citations
Citations since 2016
26 Research Items
752 Citations
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
2016201720182019202020212022050100150
Introduction
Currently working as a postdoctoral researcher at the NanoSYD, The Mads Clausen Institute, University of Southern Denmark (SDU), Denmark. I have completed my Ph.D. at the Department of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), South Korea. Tanya does research in Experimental Physics, Materials Physics, and Materials Science. Her current project focuses on organic solar cells.
Additional affiliations
September 2014 - February 2019
Ulsan National Institute of Science and Technology
Position
  • Doctoral Degree Student
April 2012 - July 2014
CSIR - National Chemical Laboratory, Pune
Position
  • Research Intern
September 2009 - June 2014
Indian Institute of Science Education and Research, Pune
Position
  • BS-MS Student

Publications

Publications (29)
Article
The charge carrier mobility of conjugated small molecules (CSMs) depends on the intermolecular interactions and morphology. Herein, we report the synthesis of CSMs having different side chains. Hydrogen bonding, lipophilic imbalance and van der Waals interactions are imparted through the asymmetric substitution of Isoindigo. The secondary forces im...
Article
Out-of-glovebox active layer fabrication using Spontaneously spreading (SS) method is demonstrated. The effect of varying the water temperature on the film morphology is investigated systematically during the SS process. The kinetics and thermodynamics of evaporation and dissolution of the solvent changed upon changing the water temperature. A stri...
Article
Spontaneously spreading (SS) film process with water substrates in the air (inert free atmosphere) has recently emerged as an effective technique for the fabrication of large-area organic solar cells (OSCs), however, there are limited studies on the process until now. Herein, we carried out an in-depth study on the influence of varying the temperat...
Article
Given that the ring-fusion strategy can effectively tail the electrical, optical, and structural properties of π-conjugated materials, we have herein developed Y-series non-fullerene acceptors with a dual acceptor–donor–dual acceptor-type structure, bearing non-fused bare bithiophene (Y–Th2), hexagonal ring-fused bithiophene (Y-BDT), or pentagonal...
Article
A family of the SM‐axis series based on benzo[1, 2‐ b:4, 5‐ b′] dithiophene and 3‐ethylrhodanine (RD) units with structurally different π‐conjugation systems are synthesized as a means to understand the structure–property relationship of conjugated pathways in ternary non‐fullerene organic solar cells (NF‐OSCs) as a third component. The optical and...
Article
In principle, an electric field via ferroelectric materials can affect the photovoltaic properties, although there is not yet a complete mechanistic understanding. Herein, a built-in electric field without a poling processing step was established by introducing developed PVDF-based ferroelectric additives within active-layer matrices of organic sol...
Article
Full-text available
Compared with conventional organic solar cells (OSCs) based on single donor–acceptor pairs, terpolymer‐ and ternary‐based OSCs featuring multiple donor–acceptor pairs are promising strategies for enhancing the performance while maintaining an easy and simple synthetic process. Using multiple donor–acceptor pairs in the active layer, the key photovo...
Chapter
An important topic in materials science has been the development of organic semiconductors and their extensive use in electronics and photonics applications such as organic solar cells (OPV), organic field-effect transistors (OFET), sensors, and photodetectors. This chapter focuses on the rational design of representative oligomers based on thiophe...
Thesis
In the global search for clean-energy harvesting technology, organic solar cells (OSCs) have gain considerable attention for their ability to form highly efficient, large-area flexible solar panels by low-cost solution processing techniques. In the solution-processible method, organic donor polymers/small molecules are intimately blended with fulle...
Article
A growing number of recent studies have demonstrated the substantial impact of the alkyl side chains on the device performance of organic semiconductors. However, detailed investigation of the effect of side‐chain engineering on the blend morphology and performance of ternary organic solar cells (OSCs) has not yet been undertaken. In this study, th...
Article
A growing number of recent studies have demonstrated the substantial impact of the alkyl side chains on the device performance of organic semiconductors. However, detailed investigation of the effect of side‐chain engineering on the blend morphology and performance of ternary organic solar cells (OSCs) has not yet been undertaken. In this study, th...
Article
Full-text available
In this study, the solubility properties of a given ternary blend set, with two donors (poly(4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)benzo[1,2‐b;4,5‐b′]dithiophene‐2,6‐diyl‐alt‐(4‐(2‐ethylhexyl)‐3‐fluorothieno[3,4‐b]thiophene‐)‐2‐carboxylate‐2‐6‐diyl (PTB7‐Th) and benzo[1,2‐b;4,5‐b′]dithiophene‐based small molecule (DR3TSBDT)) and one acceptor ([6,6]...
Article
In this study, the solubility properties of a given ternary blend set, with two donors (poly(4,8‐bis(5‐(2‐ethylhexyl)thiophen‐2‐yl)benzo[1,2‐b;4,5‐b′]dithiophene‐2,6‐diyl‐alt‐(4‐(2‐ethylhexyl)‐3‐fluorothieno[3,4‐b]thiophene‐)‐2‐carboxylate‐2‐6‐diyl (PTB7‐Th) and benzo[1,2‐b;4,5‐b′]dithiophene‐based small molecule (DR3TSBDT)) and one acceptor ([6,6]...
Article
Replacing hexyl-end-side with cyclohexyl-end-side groups on dithieno[3,2-b:2′,3′-d]silole (DTSi) and dithieno[3,2-b:2′,3′-d]germole (DTGe)-based cores yields two new small-molecule donors: DTSi(FBTTh2Cy)2 and DTGe(FBTTh2Cy)2. Together with the hexyl-end-capped analogs DTSi(FBTTh2)2 and DTGe(FBTTh2)2, the physical properties, morphology, and organic...
Presentation
Full-text available
Impact of material-solvent interaction: The physical properties of a material applied from different solutions may surpass the variation in the properties between two material having totally different molecular structure.
Article
Dithienyldiketopyrrolopyrrole (DPP2T) and thieno[3,2-b]thiophene (TT) building blocks, enabling a large intermolecular overlap through π–π stacking, into an amorphous-like polymer composed of benzo(1,2-b:4,5-b′)dithiophene (BDT) and fluorinated thieno[3,4-b]thiophene (QTT), are introduced. Herein, through the variation of relative compositions of DP...
Article
Dithienyldiketopyrrolopyrrole (DPP2T) and thieno[3,2-b]thiophene (TT) building blocks, enabling a large intermolecular overlap through π–π stacking, into an amorphous-like polymer composed of benzo(1,2-b:4,5-b′)dithiophene (BDT) and fluorinated thieno[3,4-b]thiophene (QTT), are introduced. Herein, through the variation of relative compositions of D...
Article
Ternary organic solar cells (OSCs), with a simple structure, can be easily adopted as sub‐cells in a tandem design, thereby further enhancing the power conversion efficiency (PCE). Considering the potential to surpass the theoretical PCE limit in OSCs, we incorporated a benzo[1,2‐b;4,5‐b']dithiophene‐based small molecule into a poly(4,8‐bis(5‐(2‐et...
Article
In order to address the question of how macromolecular additive processing in recent years, sparsely used, affects structural organization and photovoltaic performance, various macromolecular additives (PS, PDMS, and PMMA) vis-à-vis small DIO additive are applied to a model bulk-heterojunction (BHJ) system based on DTGe(FBTTh2)2. These additives ha...
Article
Anatase TiO2 microcubes with a unique (001) facets, single crystalline nature and highly uniform mesoporous morphology are shown to yield an excellent performance as efficient insertion anode material for lithium-ion battery application in both half cell (Li/TiO2) and full-cell (LiMn2O4/TiO2) assemblies. This material displays a stable reversible c...
Presentation
Full-text available
Unlike the deep study about the role of solvent additives (like DIO) in increasing the device performance of small donor molecule based OPVs by controlling the nanoscale phase separation, macromolcular additives had been rarely investigated. We introduced a new macromolecular additive, PMMA (Poly (methyl methacrylate)) for DTGe(FBTTh2)2, a small do...
Article
Here, we report a highly conducting 1-dimensionally (1-D) aligned polyethylenedioxythiophene (PEDOT) along the inner and outer surfaces of a hollow carbon nanofiber (CNF) and its application as a counter electrode in a dye sensitized solar cell (DSSC). The hybrid material (CP-25) displays a conversion efficiency of 7.16% compared to 7.30% for the s...
Article
Full-text available
Organic-inorganic hybrid photo-detectors with a self-sufficient mode of operation represent a research area of great current interest. In most efficient photodetectors and optoelectronic devices compound semiconductors containing toxic elements such as Cd, As, Te, S, Se etc. are used and these are also expensive. Hence there is also a rapidly growi...

Network

Cited By

Projects

Projects (3)
Project
Device Engineering in Organic Solar Cells