Surface Engineering
The Passive Pathway for Soiling Control
SolarEX Quartz is engineered for operating environments where passive surface repellence is the technically appropriate solution. It requires no UV activation, no photocatalytic trigger, and no on-site energy input to function. Quartz measurably reduces the burden and frequency of cleaning intervention by lowering contaminant adhesion and improving easy-clean surface behavior.
No UV Activation Required
Quartz delivers passive surface repellence from point of cure. UV irradiance is not a prerequisite — making this pathway viable at any latitude and in diffuse-light environments where photocatalytic routes underperform.
Hydrophobic + Oleophobic Behavior
The SiO₂ nano-film imparts both water-repellent and oil-repellent surface properties. Water beads and rolls off. Oily particulates and grime exhibit reduced adhesion energy — supporting cleaner glass between maintenance events.
Reduced Cleaning Burden
Quartz is designed to extend cleaning intervals and reduce the effort required when cleaning does occur. Lower adhesion energy translates directly to reduced wash water consumption and reduced labor input per cleaning cycle.
How Quartz Works
Quartz operates through a SiO₂-based surface chemistry applied as a transparent 100–150 nm nano-film to photovoltaic glass. At this film thickness, there is no measurable optical transmittance penalty — light transmission performance is maintained. The film modifies surface energy to produce hydrophobic behavior, causing water droplets to form high contact angles and roll off the surface rather than spreading and drying into mineral deposit films.
Surface Mechanism
The SiO₂ film reduces adhesion energy at the glass-contaminant interface. Dust, pollen, mineral particulates, and grime are less able to bond to the treated surface compared to untreated glass. This passive mechanism operates continuously from point of full cure.
Quartz is an easy-clean pathway, not an active photocatalytic pathway. Its mechanism is physical surface energy modification — inorganic, stable, and UV-independent.
Quartz Mechanism Boundaries
- UV-independent passive performance
- No photocatalytic activation required
- Maintains optical transmittance
- Supports scheduled O&M with easier, faster cleaning
- Stable, inorganic SiO₂ surface architecture after cure
Quartz Technical Profile
The following specification parameters are drawn from SolarEX source material. Coverage rates and cure times are process-dependent approximations. These values provide the technical basis for procurement, application planning, and site-specific project scoping.
Where Quartz Performs Best
Quartz is the no-UV pathway. It is therefore the preferred technical route for sites where UV-dependent photocatalytic activation cannot be relied upon — including high-latitude installations, diffuse-irradiance environments, and contexts where seasonal cloud cover limits cumulative UV dose. Pathway selection should be driven by site-specific contamination profile, irradiance context, and cleaning regime — not by default specification.
Dust, Pollen, and Mineral Soiling
Quartz is optimized for inorganic and mineral-particulate soiling profiles — including airborne dust, pollen, and calcium/mineral deposit accumulation common to arid and semi-arid environments, as well as agricultural sites.
Low-UV / High-Latitude Sites
At high latitudes and in diffuse-irradiance conditions, UV-independent Quartz performance is especially valuable where photocatalytic activation is less consistent. Quartz delivers consistent passive performance regardless of UV availability — making it the preferred passive pathway for northern European, Scottish, Nordic, and overcast-climate installations.
Rainfall-Assisted Cleaning Contexts
In regions with periodic but meaningful rainfall, Quartz can leverage precipitation as a passive cleaning force. The reduced adhesion energy of the treated surface allows rain events to carry away loosely held particulates more effectively than untreated glass — reducing scheduled wash frequency.
Water-Scarce Sites Seeking Lower Wash Frequency
For asset owners operating in water-constrained environments — including arid Middle East and North Africa sites — Quartz supports extended cleaning intervals by reducing soiling adhesion. Lower wash frequency translates to reduced water consumption and reduced O&M mobilization cost.
Evidence Base
Contextualized Quartz Evidence
The following evidence references are drawn from controlled tests, modeled scenarios, and qualitative field observations as cited in SolarEX source material. Each reference shows how Quartz performance and commercial value are evaluated across operating contexts, including controlled tests, regional models, and field observations.
Europe ROI Scenario
Europe Payback Model
Under stated assumptions (90 W/m², 2,335 sunshine hours/year, €0.289/kWh, ~10% modeled output increase example), an indicative payback period of approximately 147 days is derived. This model demonstrates the commercial value case using defined European assumptions. It provides a structured basis for project-specific ROI assessment using the customer’s site parameters.
Scandinavian Field Result
Scandinavia Controlled Test
A controlled test in a Scandinavian context recorded approximately 10% output advantage over a 6-month monitoring period for Quartz-treated modules versus untreated comparators. This monitored result demonstrates Quartz performance in a Scandinavian PV context and supports Quartz positioning for high-latitude, low-UV operating environments.
Middle East Cleanliness Reference
Middle East Cleanliness Reference
Field observation in a high-dust Middle East context recorded visibly better post-rain cleanliness on Quartz-treated glass compared to untreated modules. This field observation demonstrates visibly improved post-rain cleanliness on Quartz-treated glass in a high-dust Middle East operating context.
Europe ROI Model —
Structured Commercial Scenario
The following model demonstrates how Quartz can be evaluated commercially using defined European assumptions for irradiance, energy price, coating cost, and modeled performance improvement. It gives EPC teams and asset owners a structured framework for calculating project-specific payback and value creation.
90W
Per m² Generation
Assumed module output baseline per square meter
2335
Sunshine Hours/Year
Annual irradiance assumption used in the Europe reference model
€0.289
Per kWh Rate
Energy price assumption applied in the model scenario
147
Day Payback (Est.)
Estimated payback under the European model assumptions
€6.07
Annual Gain / m²
Modeled additional annual gain per m² in this illustrative scenario
€2.44
Coating Cost / m²
Reference coating cost applied in the Europe payback model
Application and Surface Preparation
Correct application engineering is critical to Quartz performance. The quality of surface preparation directly determines adhesion quality and long-term coating performance. Quartz must be applied to a meticulously cleaned, dry, and residue-free glass surface. Surfactant or tenside residues from prior cleaning agents will compromise adhesion and must be eliminated before application. A final wipe with an alcohol-compatible agent is recommended as the last preparation step.
Surface Preparation Requirements
- Remove all dust, grime, soiling, and organic residues
- Eliminate surfactant and tenside residues completely
- Final wipe with alcohol-compatible agent before application
- Surface must be dry — no moisture or condensation
Application Conditions
- Ideal application temperature: ~15–20°C surface temperature
- Do not apply above ~30°C surface temperature
- Apply by lint-free cloth or HVLP spray process
- Allow drying; buff with clean microfiber if required
- Rain exposure tolerated after ~1 hour
- Full cure achieved at approximately 24 hours
When Quartz Is the Correct Choice
Correct pathway selection helps maximize coating value across different site profiles. Quartz is the preferred pathway where passive surface repellence and UV-independent performance match the site profile, while Titan is preferred where organic or biological contamination dominates and sufficient UV exposure is available.
Technical FAQs
Quartz — Common Technical Questions
The following questions address the most common technical queries raised by EPC contractors, asset owners, and O&M operators during Quartz evaluation. The following questions address common technical queries from EPC contractors, asset owners, and O&M operators during Quartz evaluation. Answers are based on SolarEX source material and current application guidance.
Does Quartz need UV light to function?
No. Quartz is a passive SiO₂ surface engineering pathway. It does not use photocatalytic chemistry and does not require UV irradiance to activate or to maintain its surface properties. This is the primary technical distinction from the Titan pathway, and the reason Quartz is the preferred choice at high-latitude or diffuse-irradiance sites.
How does Quartz improve maintenance cleaning?
Quartz reduces adhesion energy and lowers the soiling rate on treated glass, supporting longer cleaning intervals and faster cleaning cycles. Periodic inspection and scheduled cleaning can be optimized around the treated surface behavior, helping reduce per-cycle effort, wash water demand, and cleaning burden.
Does Quartz affect panel light transmission?
No measurable optical transmittance penalty is stated in the SolarEX source material. The 100–150 nm film is transparent and does not produce a measurable reduction in light transmission to the cell layer under normal operating conditions.
Is Quartz the better choice over Titan for all sites?
Quartz is the preferred pathway where passive surface repellence and UV-independent performance match the site profile. Titan is the preferred pathway where organic or biological contamination dominates and sufficient UV exposure is available.
Review Quartz for Your Site
SolarEX provides structured technical review and commercial discussion support for asset owners, EPC contractors, and O&M operators evaluating Quartz for specific project requirements. Responses are provided within two business days. English and Norwegian language support is available.
Request a Technical Review
Engage SolarEX's engineering team for a site-specific technical assessment of Quartz applicability, application protocol, and expected operating fit.
Commercial Discussion
For procurement leads and commercial teams evaluating Quartz for project specification, SolarEX is available for commercial discussion covering supply, coverage estimation, and project-scale pricing.
SolarEX
Surface engineering solutions for photovoltaic glass. Engineered for asset owners, EPC contractors, and O&M operators operating in demanding soiling environments.
SolarEX — Surface Engineering for Photovoltaic Glass
