Realization of Perovskite‐Nanowire‐Based Plasmonic Lasers Capable of Mode Modulation

Abstract

Manipulating stimulated‐emission processes and overcoming the ohmic loss of metals in plasmonic lasers are of significance for the according applications in biological sensors, data storage, photolithography, and optical communications. Herein, through utilizing an electrochemical‐assisted growth method for high‐quality perovskite nanowires, plasmonic lasers based on the structure of metal/dielectric layer/perovskite nanowires are constructed. The plasmonic lasers demonstrate a threshold of 62 µJ cm−2, a high quality factor of Q ≈ 655, and a fast lasing decay time of 1.6 ps. Interestingly, the plasmonic lasers present an attractive capability in transformation from single mode to multiple modes just by adjusting the pumping energy. In addition to the broad stoichiometry‐dependent tunability of the perovskite materials, the proposed plasmonic lasers have great promise in real applications.

The Electron–Hole Plasma Contributes to Both Plasmonic and Photonic Lasing from CH3NH3PbBr3 Nanowires at Room Temperature

“…[1][2][3][4] At the same time, the high fluorescence yield, high gain, and wavelength tunability make LHP an ideal materials for optoelectronics research, such as light-emitting devices and lasers. [5][6][7][8][9] Numerous reports have demonstrated lasing actions in LHP including organicinorganic hybrid perovskites [6,7,10] or all-inorganic perovskites [11][12][13] in Fabry-Perot cavity, [7,10] whisper gallery cavity, [14] or distributed feedback (DFB) cavity [15] operated on plasmonic mode, [16][17][18] photonic mode, [6,7,15,19] and even polariton mode [20,21] from low temperature to room temperature or even higher. However, the lasing mechanism in LHP is still under investigation, even though various mechanisms have been proposed to explain how lasing happens.…”

Examining the Interfacial Defect Passivation with Chlorinated Organic Salt for Highly Efficient and Stable Perovskite Solar Cells

“…Organic–inorganic hybrid lead halide perovskite materials have been widely used to develop various types of optoelectronic applications, such as solar cells, light‐emitting diodes, lasers, humidity/photodetectors, photocatalysis, and so on. [ 1–5 ] Perovskite solar cells (PSCs) are considered to be an excellent emerging technology for the next generation thin‐film photovoltaic due to their promising optoelectronic characteristics, including high optical absorption coefficient, large carriers’ diffusion lengths, tunable bandgap, and lower exciton binding energy, etc. [ 6–10 ] Owing to regulating different compositions of perovskite materials, device configurations, and deposition techniques, the device performance of PSCs remarkably improved from 3.8% to the updated certified value of 25.2%, competing the performance of commercialized silicon solar cells.…”

Full-Spectrum Analysis of Perovskite-Based Surface Plasmon Nanolasers

“…Possible reasons could be the superior material gain provided by MAPbBr 3 than that of ZnO and the smaller internal loss at 550 nm than that at 370 nm [35]. Additionally, perovskite NW plasmon lasers [26][27][28] reveal various thresholds at different temperatures. To operate under strong pumping powers at room temperature while maintaining devices performance without severe material ablation and thermal degradation, the thermal stability [40] and crystal quality [41] of perovskite NW could be the key parameters to be improved.…”

“…Various plasmonic NW cavities have been investigated recently [19][20][21][22][23]. Cavities in a metal-insulator-semiconductor scheme are especially promising for sustaining hybrid plasmonic gap modes [24][25][26][27][28]. Therefore, we placed samples of doped or pure perovskite NWs on insulator-coated metallic plates to form plasmonic Fabry-Perot cavities.…”