Few‐Layer MoS₂–Organic Thin‐Film Hybrid Complementary Inverter Pixel Fabricated on a Glass Substrate

Abstract

Few-layer MoS2-organic thin-film hybrid complementary inverters demonstrate a great deal of device performance with a decent voltage gain of ≈12, a few hundred pW power consumption, and 480 Hz switching speed. As fabricated on glass, this hybrid CMOS inverter operates as a light-detecting pixel as well, using a thin MoS2 channel.

Highly Flexible and High‐Performance Complementary Inverters of Large‐Area Transition Metal Dichalcogenide Monolayers

“…To evaluate our results, we compare the obtained gain with other literature. Figure displays a summary of the supply voltage versus the voltage gain for inverters based on 2D materials, including TMDCs, black phosphorene, and graphene . In particular, as shown in Figure , TMDC‐based inverters outperform those of phosphorene and graphene .…”

“…Figure b shows the summary of the V dd dependence of the voltage gain, the ratio of the total noise margin, and static power consumption. Similar to the gain, the noise margin is optimized, resulting in total margin up to 95%, which is one of the best noise margins without compromising high gain (>60) among TMDC‐based CMOS inverters (Supporting Information, Figure S7) . The power consumption is also well controlled, as shown in the bottom panel of Figure b.…”

“…In stark contrast to WSe 2 quasi‐CMOS inverters, the WSe 2 –MoS 2 CMOS inverter exhibits a low off‐state voltage. Moreover, Figure d shows the gain profile; the maximum voltage gain reaches 110 at a V dd of 2.0 V, which is the highest inverter gain among TMDC‐based inverters . To understand the high performance in WSe 2 –MoS 2 CMOS inverters, we simulated the maximum performance using the transfer characteristics of WSe 2 and MoS 2 EDLTs (see Supporting Information, Figure S6) and found that the logic operations and high gain up to 100 can be explained by the performance of these transistors.…”

“…Because our devices are built on large‐area polycrystalline films, in addition to the high switching ability, our results highlight the utility of TMDCs for large‐area integration. It is noted that relatively high‐gain (≈60) inverters are realized by combining TMDCs and other materials, such as nanowires and organic polymers . This approach is advantageous for yielding high gain because we can replace the poor TMDC n‐type or p‐type transistors with a better material.…”

“…Summary of the reported 2D‐material‐based inverters. Voltage gain versus supply voltage is plotted with the literature results of TMDCs, black phosphorene, and graphene . Black diamonds, brown squares, and gray circles indicate inverters fabricated from various TMDCs, phosphorene, and graphene, respectively.…”