A Research Paper Led by Prof. Abhishek SRIVASTAVA and His Students Awarded Silver Prize at the 21st International Meeting on Information Display Young Leaders Conference II

The research paper "Ink-Jet Printing Perovskite Emissive Color Filter for Liquid Crystal Display" (Yiyang Gao, Maksym F. Prodanov, Chengbin Kang, Valerri V. Vashchenko, and Abhishek K. Srivastava) supervised by Prof. Abhishek Srivastava has awarded Silver Prize at the 21st International Meeting on Information Display (IMID 2021) Young Leaders Conference II (YLC 2).

The photoluminescence color filters (PLCF) have numerous benefits over conventional absorptive-type color filters, such as a wider color gamut and higher device efficiency. Advanced downconverting materials such as quantum dots (QD), quantum rods (QR), and perovskite nanoparticles (PNP) are potential candidates for PLCF.  Recently, a plethora of research papers was published discussing various aspects of the photoluminescence color filters. However, due to technical difficulties, the progress for full-color PLCF array fabrication with high pixel density and photoluminescence stability is impeded. In this paper, the research team showed a full-color PLCF array using green PNP and red QR. They used the inkjet printing technique to make photoluminescence color filters using a porous polymer film substrate by inkjet printing technique. It allows a bank/masks free printing for high-resolution displays and simultaneously offers very stable photoluminescence properties.


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Figure 1: Full color PLCF array on porous film substrate using green CsPbBr_3 nanoparticle and red CdSe/ZnxCd1-xS quantum rods. Photos taken at (a) Day 0: Freshly printed; (b) Day 80: stored in ambient environment for 80 days. (c) LCD demo equipped with fabricated PLCF. (d) Color gamut performance of the PLCF and device.



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