Copper Tetracyanoquinodimethane (CuTCNQ): A Metal-Organic Semiconductor for Room-Temperature Visible to Long-Wave Infrared Photodetection

Sivacarendran Balendhran, Zakir Hussain, Vivek R. Shrestha, Jasper Cadusch, Ming Ye, Nima Sefidmooye Azar, Hyungjin Kim, Rajesh Ramanathan, James Bullock, Ali Javey, Vipul Bansal, Kenneth B. Crozier

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


Mid-wave and long-wave infrared (MWIR and LWIR) detection play vital roles in applications that include health care, remote sensing, and thermal imaging. However, detectors in this spectral range often require complex fabrication processes and/or cryogenic cooling and are typically expensive, which motivates the development of simple alternatives. Here, we demonstrate broadband (0.43-10 μm) room-temperature photodetection based on copper tetracyanoquinodimethane (CuTCNQ), a metal-organic semiconductor, synthesized via a facile wet-chemical reaction. The CuTCNQ crystals are simply drop-cast onto interdigitated electrode chips to realize photoconductors. The photoresponse is governed by a combination of interband (0.43-3.35 μm) and midgap (3.35-10 μm) transitions. The devices show response times (∼365 μs) that would be sufficient for many infrared applications (e.g., video rate imaging), with a frequency cutoff point of 1 kHz.

Original languageEnglish
Pages (from-to)38544-38552
Number of pages9
JournalACS Applied Materials and Interfaces
Issue number32
Publication statusPublished - 2021 Aug 18

Bibliographical note

Funding Information:
This work was supported by DARPA (HR0011-16-1-004) and by the Australian Research Council (DP210103428, DP170103477, DP180104141, FT140100577, DE150100909). This work was performed in part at the Micro Nano Research Facility (MNRF) at RMIT University in the Victorian Node of the Australian National Fabrication Facility (ANFF). Facilities and technical support from the RMIT Microscopy and Microanalysis Facility (RMMF), a node of Microscopy Australia, are acknowledged. This work was supported in part by the Australian Research Council (ARC) Centre of Excellence for Transformative Meta-Optical Systems (Project ID CE200100010).

Publisher Copyright:
© 2021 American Chemical Society.

All Science Journal Classification (ASJC) codes

  • Materials Science(all)


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