# SBIR / STTR #DTR27BZ02-NV006

DTRA Phase I R&D for Domestic Growth of Large-Format CZT Crystals

**Buyer:** Defense Threat Reduction Agency (DTRA)
**Posted:** November 04, 2026
**Respond By:** January 06, 2027
**Identifier:** DTR27BZ02-NV006
**NAICS:** 541715, 334419

The Defense Threat Reduction Agency is seeking research to establish domestic, scalable growth of large-format CZT crystals for radiation detection.
- **Government buyer:** Defense Threat Reduction Agency (DTRA), Department of War (DoW), DTRA SBIR/STTR Program.
- **Opportunity:** Phase I SBIR topic DTR27BZ02-NV006, focused on domestic scalable growth of large-format pixelated cadmium zinc telluride (CZT) crystals for advanced radiation detection.
- **OEMs and vendors:** No OEMs, vendors, or commercial part numbers are identified. **No finished detector systems or crystals are being purchased; this is an R&D opportunity.**
- **Technical target:** Nominal crystal dimensions are 44 × 44 × 15 mm for room-temperature gamma-ray detection and spectroscopy supporting WMD detection, nuclear forensics, and related missions.
- **Phase I work:** Assess domestic and allied growth capabilities and material sources; design a growth and machining process; demonstrate at least one near-target crystal or scalable proxy; and characterize material uniformity, performance, supply-chain risks, yield, and commercialization potential.
- **Follow-on work:** Phase II would refine and scale the process to produce multiple crystals, with independent characterization of a lot of at least three to five crystals or equivalent validated output. Optional Phase III may support pilot production and commercial transition.
- **Key requirements:** Crystal growth must be U.S.-based, use traceable U.S. or allied materials, demonstrate reproducible quality and performance, and include a credible commercial transition path.
- **Funding and duration:** Phase I is limited to seven months and a $250,000 base amount, excluding TABA. Follow-on Phase II may run up to 24 months with a $1,500,000 ceiling, excluding TABA.

### Description

The topic is titled “Domestic Scalable Growth Of Large-Format Pixelated CZT Crystals For Advanced Radiation Detection.” It is listed under the Defense Threat Reduction Agency’s 2027 SBIR program, Release 2. The DTRA Phase I instructions specify a project duration of seven months and a maximum base amount of $250,000, excluding Technical and Business Assistance. Proposals are to be submitted through DSIP; the topic response deadline is January 6, 2027.

[View original listing](https://www.dodsbirsttr.mil/topics-app/)