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Browsing by Author "Venkatesan, S."

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Controlled growth of MoS2 flakes from in-Plane to Edge-Enriched 3D network and their surface-Energy studies

Agrawal, A. V.; Kumar, N.; Venkatesan, S.; Zakhidov, A.; Manspeaker, C.; Zhu, Z.; Hernandez, F. R.; Bao, J.; Kumar, M. (2021-10-18)

Controlled and tunable growth of chemically active edge sites over inert in-plane MoS2 flakes is the key requirement to realize their vast number of applications in catalytic activities. Thermodynamically, growth of inert ...
Fast detection and low power hydrogen sensor using edge-oriented vertically aligned 3-D network of MoS2 flakes at room temperature

Agrawal, A. V.; Kumar, R.; Venkatesan, S.; Zakhidov, A.; Zhu, Z.; Bao, J.; Kumar, M.; Kumar, M. (2021-10-08)

The increased usage of hydrogen as a next generation clean fuel strongly demands the parallel development of room temperature and low power hydrogen sensors for their safety operation. In this work, we report strong ...
Interfacial study to suppress charge carrier recombination for high efficiency perovskite solar cells

Adhikari, N.; Dubey, A.; Khatiwada, D.; Mitul, A.F.; Wang, Q.; Venkatesan, S.; Lefanova, A.; Zai, J.; Qian, X.; Kumar, M.; Qiao, Q. (2016-11-16)

We report effects of an interface between TiO2−perovskite and grain−grain boundaries of perovskite films prepared by single step and sequential deposited technique using different annealing times at optimum temperature. ...
Origin of high carrier mobility and low residual stress in RF superimposed DC sputtered Al doped ZnO thin film for next generation flexible devices

Kumar, N.; Dubey, A.; Bahrami, B.; Venkatesan, S.; Qiao, Q. (2018-12-31)

In this work, the energy and flux of high energetic ions were controlled by RF superimposed DC sputtering process to increase the grain size and suppress grain boundary potential with minimum residual stress in Al doped ...
Photoactivated mixed in-plane and edge-enriched p-Type MoS2 flake-based NO2 sensor working at room temperature

Agrawal, A.V.; Kumar, R.; Venkatesan, S.; Zakhidov, A.; Yang, G.; Bao, J.; Kumar, M.; Kumar, M. (2018-10-01)

Toxic gases are produced during the burning of fossil fuels. Room temperature (RT) fast detection of toxic gases is still challenging. Recently, MoS2 transition metal dichalcogenides have sparked great attention in the ...
Room temperature, air crystallized perovskite film for high performance solar cells

Dubey, A.; Kantack, N.; Adhikari, N.; Reza, K. M.; Venkatesan, S.; Kumar, M.; Khatiwada, D.; Darling, S.; Qiao, Q. (2021-10-04)

For the first time, room temperature heating free growth and crystallization of perovskite films in ambient air without the use of thermal annealing is reported. Highly efficient perovskite nanorod-based solar cells ...
Shelf life stability comparison in air for solution processed pristine PDPP3T polymer and doped spiro-OMeTAD as hole transport layer for perovskite solar cell

Dubey, A.; Adhikari, N.; Venkatesan, S.; Gua, S.; Khatiwada, D.; Wang, Qi; Mohammad, L.; Kumar, M.; Qiao, Q. (2016-07-19)

This data in brief includes forward and reverse scanned current density–voltage (J–V) characteristics of perovskite solar cells with PDPP3T and spiro-OMeTAD as HTL, stability testing conditions of perovskite solar cell ...
Solution processed pristine PDPP3T polymer as hole transport layer for efficient perovskite solar cells with slower degradation

Dubey, A.; Adhikari, N.; Venkatesan, S.; Gu, S.; Khatiwada, D.; Wang, Q.; Mohammad, L.; Kumar, M.; Qiao, O. (2016-11-21)

We report solution processed pristine diketopyrrolopyrrole (DPP) based polymer (PDPP3T) as hole transport layer (HTL) for perovskite (CH3NH3PbI3) solar cells. The pristine PDPP3T based perovskite solar cells achieved ...
Strategic review of secondary phases, defects and defect-complexes in kesterite CZTS-Se solar cells

Kumar, M.; Dubey, A.; Adhikari, N.; Venkatesan, S.; Qiao, Q. (2016-11-19)

Earth abundant kesterite copper-zinc-tin-sulfide-selenide (CZTS-Se) is considered as cost-effective material for next generation solar cells. However, current CZTS-Se solar cells have much lower efficiency than CIGS solar ...

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